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1. Spam Sleuth 2002 2003 Blue Squirrel All Rights Reserved Spam Sleuth Enterprise User s Guide Spam Sleuth User s Guide 2004 Blue Squirrel All rights reserved No parts of this work may be reproduced in any form or by any means graphic electronic or mechanical including photocopying recording taping or information storage and retrieval systems without the written permission of the publisher Products that are referred to in this document may be either trademarks and or registered trademarks of the respective owners The publisher and the author make no claim to these trademarks While every precaution has been taken in the preparation of this document the publisher and the author assume no responsibility for errors or omissions or for damages resulting from the use of information contained in this document or from the use of programs and source code that may accompany it In no event shall the publisher and the author be liable for any loss of profit or any other commercial damage caused or alleged to have been caused directly or indirectly by this document Printed January 2004 Information in this document is subject to change without notice and does not represent a commitment on the part of Blue Squirrel The software described herein including all associated documentation and data is the exclusive property of Blue Squirrel or its suppliers and is furnished only under a license agreement defining the
2. z matches the end of a buffer Z matches the end of a buffer or possibly one or more new line characters followed by the end of the buffer Escape operator The escape character has several meanings Inside a set declaration the escape character is a normal character The escape operator may introduce an operator for example back references or a word operator The escape operator may make the following character normal for example represents a literal rather than the repeat operator Single character escape sequences The following escape sequences are aliases for single characters Escape sequence Character code Meaning Na 0x07 Bell character f OxOC Form feed n OxOA Newline character r OxOD Carriage return 2004 Blue Squirrel 58 Spam Sleuth User s Guide t 0x09 Tab character v Ox0B Vertical tab e Ox1B ASCII Escape character Odd Odd An octal character code where dd is one or more octal digits xXX OxXX A hexadecimal character code where XX is one or more hexadecimal digits x XX OxXX A hexadecimal character code where XX is one or more hexadecimal digits optionally a unicode character cZ z An ASCII escape sequence control Z where Z is any ASCII character greater than or equal to the character code for Miscellaneous escape sequences w Equivalent to word W Equivalent to word s Equivalent to space NS Equivalent t
3. File Edit view Help V O OO DE 7 QS ES accounts mshono z Play Like a Sultan lt VegasStyleCasino1118 8 12 2003 2 35 01 PM You could be a Winner Gabriella Manzullo lt GabriellaM progstra 8 12 2003 2 35 15 PM Progressive Strategies eNews Cc Julianne Snyder lt bbzm7ile uymail com gt 8 12 2003 4 01 30 PM No Prescription Required Cheap P Free Postage lt contact livingabound com gt 8 12 2003 4 01 46 PM Receive Up To 25 FREE Postage Send Me Bargains lt 867 6616410 unsubscri 8 12 2003 4 11 41 PM Refinance before rates go up age Network Appliance Alerts lt alerts netap 8 12 2003 4 40 53 PM Field Alert 184 Bug 90424 Gic Investor Insights lt InvestorInsights r s 8 12 2003 4 47 12 PM Current settings Spam Threshold 190 Permanent Trash 10200 Y E O O O Server On PrxY 10 10 The Mail Jail stores the spam for a short period of time Here are the reasons you would store spam e To provide a way to get a good message back if the program incorrectly determines it to be spam e To provide a set of spam so the Bayesian Analyzer can train e To be able to see reports on how and why a messages was marked as spam e To provide a list of spam mail so you determine the effectiveness of the program The Mail Jail also provides these abilities To view spam messages in a safe environment To keep a report for every spam To recover a message that was marked as spam To keep a report fo
4. Cancel Help The HTML Volume Analyzer looks at the loudness of the message Most regular folks don t scream their message in bright reds and yellows in large fonts Many spammers use these attention getting techniques This analyzer assigns points for large fonts and bright colors You can control the maximum number of points that this analyzer contributes to the total report If you feel it does a good job at distinguishing good e mail from spam you may want to increase the Max points If you have loud friends that e mail you in big bold red letters then you may want to either turn this analyzer off decrease its influence on the total score by lowering the Max points or pick new friends The sensitivity lets you set how picky this analyzer is If you set it very high it will give the max points for one large font If you set it very low then it will take lots of large font changes and 2004 Blue Squirrel Configuration 23 3 1 13 color changes to add points Charsets Do you get e mails where the subject looks like this YAGOU GNO These are usually spam from China or Korea where they ve specified a Chinese or Korean character set and your e mail program won t display the characters Spam Sleuth lets you detect and eliminate these e mails with the Charsets Analyzer By default the program will eliminate Chinese and Korean character sets Conture ag IV Active Charsets allows you to
5. Beware if you click on a link sent from an e mail there is a high probability that the web site owner now knows that you as identified by your e mail address read their e mail and followed their link Fake Links Some e mails are including links that are designed to deceive The spammers 2004 Blue Squirrel Configuration 27 use special formatting to make it appear that you are going to your own bank or secure site when really the browser is taking you to a dangerous site that will take your personal login information and use it to empty your account An example http www ebay com login 200 18 11 4 While this looks at first glance to be going to eBay it is going to a site residing at IP 200 18 11 4 Remove Images External We recommend leaving checking this option because most regular folks friends family co workers do not send e mail with external links To do so requires that you have a web server or hosting site and that you are sending HTML with the intent that when the message is opened the image will be loaded from the web server Usually this is something that marketers do Remove Images Internal This one isn t as bad as external images The image has already been sent to you in the e mail message This is often used by spammers but can easily be used by anyone who pastes a picture of themselves into an e mail Opening messages with just Internal images doesn t send anything back to the send
6. specify different character sets ESMTP Extensions to Simple Mail Transfer Protocol A specification for additional 2004 Blue Squirrel Reference 53 features beyond SMTP See SMTP ESMTP servers can support additional login methods IMAP4 A protocol based on REC 1730 that allows downloading messages as well and putting messages into folders on an e mail server Most ISPs use POP3 instead of IMAP4 Most servers that support IMAP4 also support POP3 Spam Sleuth uses POP3 and not IMAP4 Polling Mode The mode in Spam Sleuth which is the opposite of POP3 Proxy Mode In Polling Mode Spam Sleuth must check your e mail before your e mail program Any non spam messages will be left on your e mail server while spam messages will be removed and temporarily stored POP3 Post Office Protocol 3 A specification for an e mail server to talk to an e mail client Based on RFC 1939 POP3 specifies how an e mail program like Eudora or Outlook communicate with a server to get the e mail POP3 Proxy Mode The mode in Spam Sleuth which when activated in account configuration will cause Spam Sleuth to become your e mail server You must modify two settings in your e mail program when using POP3 Proxy Mode Change the Incoming POP3 Server to localhost and change the login username to your full e mail address Regular Expressions A very powerful syntax for searching for complex patterns in texts such as e mail messag
7. 1 23 Auto Responder Are there times when you can t respond to your e mail Use the Auto Responder to let people know that you are away from e mail but you ll get back to them when you are able Perhaps you ve changed your address and you d like to automatically let people know to use a different e mail address in the future TU x EMail 5tamps Bouncer ap Relay Auto Responder Notify Miscellaneous T Active Send an automatic response Send an automatic response to messages received while you are on vacation or out of the office You can specify what message score value will cause the response to be sent Send an Auto Response if the message is good C Send an Auto Response if the score is between 195 and 10200 Display Name J ir I Show Confirmation Dialog Right click only Play Sound when Auto Response is sent Test Edit Message Cancel Help The Auto Responder sends an automatic message A default message is included but you can edit it to say whatever you d like The message will go back to the sender as listed in the From or Reply To This Analyzer is not on by default You should only turn it on if you want an automatic reply The Auto Responder does influence whether the message reaches your InBox 2004 Blue Squirrel 42 Spam Sleuth User s Guide 3 2 Mail Jail FW JimSmith hotmail com Spam Sleuth 5 x
8. 14 recommend that you uncheck your characters such as and If your country uses other characters we recommend that you uncheck them so that they aren t assigned points You can increase the points given for any particular character You can have Spam Sleuth scan the Subject of the message and the Body of the message By default Spam Sleuth only checks the Subject BlackLists Ever wish there was a comprehensive list of spammers Well so do we but unfortunately the closest thing is the blacklists The blacklists contain the IP addresses of all the known spam servers and open relay servers used by spammers These lists of spam servers are built different ways Some of them set spam traps where they put an e mail address out on web pages and other public places so that it gets on the big lists of e mails Then they blacklist anybody who sends to that e mail address Others collect the spam e mail from lots of people and if there are enough of the same message they assume it is spam and blacklist the server The Blacklist Analyzer lets you check the list to see if the e mail was sent from a blacklisted server There are lots of blacklists and Spam Sleuth includes most of them You should only use one at a time because they can take several seconds per message to check x IV Active blak istn v list ed list ing a list of persons who are under suspicion N disfavor or censure or who are not to be hired served or otherw
9. 2 3 Spam Report Each message gets a spam report You can see this report by going to the Mail Jail and double click on a message You will see a spam report at the bottom 15 BadWord OFFER 15 Badword OFFER 10 Badword FREE 10 Badword LIVE Show Decoded t UnSpam Delete f Each Analyzer adds its information to the report The bottom will have a total score for the message Show Decoded will show the message after decoding characters and Base64 encoded text It will not decode attachments If you want to see the reports for messages that aren t flagged as spam you ll need to turn on Score and store non spam messages in Miscellaneous 2004 Blue Squirrel 10 Spam Sleuth User s Guide 3 Configuration Most of the time the only thing you ll see is a small icon that sits in your Windows system tray 4 Once configured Spam Sleuth monitors your e mail accounts and removes spam before you or your e mail program sees it If you right click on this icon A you get a menu View E Configure J Email Client JimSmith hotmail com jsmith att net Check All Accounts Exit View Lets you view spam messages in the Mail Jail with a safe Spam Viewer Configure Brings up the configuration dialog so you can tailor Spam Sleuth to meet your needs E mail account list Choosing an e mail account will cause Spam Sleuth to scan that account for spam Email Client Launches your
10. 2004 Blue Squirrel Index 63 Index A Account 5 Add to Friends 43 Add to Spammers 43 Advanced Filter 59 APOP 52 AppendixB 59 ASMTP 52 Attachments 18 Auto Responder 41 Automatic Login 5 B BadWords 16 Bayes 31 Thomas 31 Bayesian 29 Bayesian Advanced Settings 33 Bayesian Training 32 Bayesian Statistics 33 Blacklist by e mail 13 Blacklist by IP 24 BlackLists 24 52 Bounce Method 38 Bouncer 38 C Challenge Response 34 Charsets 23 52 Chinese spam 23 Configure 5 Configuring 4 D Delete Messages 46 Dictionary 20 Drag and Drop 43 Es EMail Stamp Sample 38 EMail Stamps 36 ESMTP 52 Export Bayesian Dictionary 29 Extra Text 20 Fa Filter 46 Friends 12 G Getting Started 4 GoodWords 15 Green Dot 44 Green Dot on Yellow Envelope 44 H HTML Removal 25 HTML Volume 22 Human Test 34 Images 25 IMAP4 52 Import Bayesian Dictionary 29 Indexer 46 Indexing 46 Introduction 4 J Java 25 Junk Words 20 K Keep good messages 49 Korean spam 23 2004 Blue Squirrel 64 Spam Sleuth User s Guide e Launching 4 Learn 31 Legend 44 License Agreement 60 Links 25 Logging 49 Mail Jail 42 Mailing address 52 Mailing Lists 13 Mark as Good UnSpam 46 Mark as Spam 46 Master Dictionary 20 Modified Message 44 N Naive Bayesian 31 Negative Tuning 50 p Password 5 Points 8 Polling Mode 52 POP3 52 POP3
11. Configuration dialog box When you double click on a message or choose the B icon the message will be displayed in a safe message viewer The message viewer will not format HTML will not run Script and will not decode attachments It shows you the raw message that was sent This is sometimes very helpful to see as you can see the tricks that spammers use to hide their message from simple filters Drag and Drop You can Drag and Drop individual messages from Outlook or Outlook Express into the Mail Jail to Add to Friends or Add to Spammers The Mail Jail must be visible and the message must have a valid From address 2004 Blue Squirrel 44 Spam Sleuth User s Guide 3 2 2 Legend for Spam Message Types x m Message Type m Message Status is Spam message a Turing Test Requested O Modified message e g HTML g TEATER Removal Attachment Removal O Good message only kept if Scoreand a N Storeistumedon geese i8 Email Stamp Passed Paid gt Relayed 8 Bounced 8 Auto Responded j Help Spam message This indicates an e mail message was assigned points by the analyzers and the total points exceeded the spam threshold Modified message This indicates an e mail message that was modified by one or more of the Analyzers when it was being analyzed The modified message was sent to your InBox The original message is being held in the Mail Jail If you
12. Proxy Mode 52 Positive Tuning 50 Power Filter 29 Profanity 17 R Recycle Bin 46 Red Dot 44 Redirect 40 Reflect 40 Regular Expression 29 53 Regular Expressions 52 Relay 40 0 Score 11 Score and Store 5 49 Scripts 25 Searching 46 Shortcut Keys 50 SMTP 52 Sort Columns 42 Spam Viewer 42 Spammers 13 Start 5 Statistical Analysis 31 Statistics 33 Status 42 Subject 21 oie Tag Mode 5 Technical Support 52 Thomas Bayes 31 To 14 Train Bayesian Analyzer 32 Trash 46 Turing Test 34 35 U User Dictionary 20 Vacation Responder 41 Valid Sender 27 View All Accounts 42 View Individual Accounts 42 Viewing Spam 4 VIP Key 52 Viruses 18 W Web Bugs 25 Whitelist 12 2004 Blue Squirrel Index 65 Word Probabilities 31 X X Text Classification 5 Y Yellow Dot 44 2004 Blue Squirrel
13. Sleuth will pass the e mail along to your e mail program By default the threshold is set at 190 e Stop analyzing if score exceeds The second Spam Sleuth receives e mail messages the Analyzers begin adding points If the points begin to exceed 1 000 Spam Sleuth the scorekeeper tells all of the analyzers to stop giving points because it is clear that the e mail message is spam These types of messages are sent to the Mall Jail and will be deleted after 30 days e Permanent trash if score exceeds If the overall total of points from all of the Analyzers is more than 10 200 Spam Sleuth immediately deletes the message These types of messages usually contain adult content pornography 2 2 2 Spam Management Why keep spam for any length of time Well there is a chance that a good e mail will get tagged as spam Spam Sleuth makes it convenient for you to retrieve good e mail messages that may have been classified as spam In the Spam Management section of the Score tab you can tell Spam Sleuth how often to delete messages from the Spam Sleuth Mail Jail By default Spam Sleuth will delete messages classified as spam after 30 days As you re looking through the Spam Sleuth Mail Jail you can delete messages at your leisure By default Spam Sleuth will present you with a dialog to ensure that you want to delete the message If you prefer not to receive the confirmation message uncheck the Ask for confirmation when manually deleting spam check box 2
14. The message will be in the Mail Jail marked as spam Click here to go online and see a sample EMail Stamp request Important Note You should turn on Turing Test or EMail Stamps or Bouncer but you should only turn on one of them Warning The EMail Stamp request sent to the sender spammer will identify your PayPal account by e mail which is linked with your name If you are uncomfortable with this then do not activate the EMail Stamps Analyzer Sample EMail Stamp Request Subject EMail Stamp Request for The Original Subject I use EMail Stamps to curb the flow of unwanted junk e mail Your message has been queued for delivery If you would like your message delivered to my InBox it will cost you 0 37 This modest sum is enough to keep unwanted junk e mail from flooding my account This e mail was sent to you only because you contacted me by e mail Thank you for your understanding If you choose not to pay I completely understand and I respect your decision If your message is important and you choose to pay 0 37 to allow your e mail through the message will be automatically sent once PayPal informs me that the payment has been made There is no need to send the message again You can pay me securely by PayPal with Visa Mastercard Discover or American Express If you do not have a PayPal account you can sign up for one at no cost Pay through PayPal Sign up for PayPal Bouncer Ever wish you could just automatica
15. a ee a pa 46 Delete ppa en En ere eden edad nee n e rade 46 Delete AI ON aaa isteach iid ner Res anse sn nn AN NAN 46 Mark as Good UNSPaM svsiceccisesseccasccepecdevccisccssectaccepedsaccusecsecctaecepectavcisecsueddteceneccucdubessucctaecepectueddsecsuestuedenecceccebe 46 MarKaS Spam sisevscssscesevaceesicievscesecerevsassosscanscevscasavecsestacavscesscaiavaesestecesacensedvarstsestsaatsecenteveesssusteaeeeeseaeeess 46 SeloctAll nA ADA AKIN ee ede eee 46 Refresh naaa ANDAR aetna tensed eee ete etek 46 AD EP RA PO PP PAR PA PP PR PO BO peer tre PE O PP EP 46 O AA AA aaa neat 47 Toolbar aagawan paanan IDADAAN RA 47 StatusBar BRAND AANI ARIA ADEN die ins ne ann ADDED aed 48 o nAPO PP PAR O usine 48 Display O 3o aaa NANANA R TIBA BETADINE DINDI GAI RNGA 48 View Message sienne NAGANA NANA NADINE NAE RANGER 48 Legend O anG a GGGBIIABG BITBIT NDN Naai 48 Help O GNG 48 Help Topics mGA TIDE GGEEATINDDGNAGIIRABGDGNATTDNGUIDNNNNA 48 AbOUt es mener PR PP PP O esti eee 48 Advanced Features 49 Score and SL LO LR PA a NI IIE NAN 49 Logging ANA AA EE EEE aa 49 Tips and Tricks ss a aaa aa aaa aeaaea aeaa da aaan anaiai 50 Shortcut Keys O maa NAADIK NENENG 50 Positive Tuning sccssscecccees cevetvanciceseeecacssciscecedsasseccentactusdnsuctucsvencucdsvissecedususeddentdseuscvaucsadsiecucdstiecesddssusecdentydedecraseveseeeeads 50 Negative Tuning saciissisccatscacsiecisiccncdeaccaceiciicaestetecedadadusaecasiseveceadessevestentucendev
16. and their little trick This assigns points for that trick Points for no subject line Set the points that will be assigned when a message has no subject line in the header This is rare but does happen with some spam Points for empty subject Set the points that will be assigned when a message has an empty or blank subject This is common with spam but may also occur when a friend sends you a message 2004 Blue Squirrel 22 Spam Sleuth User s Guide and forgets to fill in the subject Use Defaults Sets Dictionary settings to the defaults 3 1 12 HTML Volume Do some of your e mails just scream at you The spammers want your attention They use reds yellows bright blues big fonts embedded pictures and other techniques not usually employed by your friends relatives and co workers The HTML Volume Analyzer looks for these elements in your e mail and assigns points when it finds them You can change how sensitive the HTML Volume Analyzer is and the maximum number of points each e mail message is allowed to contribute to the total x FN Active Scans the message for HTML with reds yellows bold large fonts etc Most non spam ng e mails will not use excessive HTML ChE formatting Increasing the Max Points will ng increase the influence of this analyzer HTML Volume Max points 50 Default 50 KB Sensitivity 200 Default 200 Charsets Blacklists HTML Removal Valid Sender ram
17. bit of tuning such as adding your Friends and GoodWords you can help Spam Sleuth do a better job of cleaning up your e mail By changing your spam threshold score you can make Spam Sleuth more aggressive at eliminating the junk But don t worrry Spam Sleuth lets you recover for 30 days any e mail it incorrectly detected with the Spam Viewer Starting Spam Sleuth The Spam Sleuth Server runs in the background detecting spam and eliminating it before it reaches you If you have been given access you can run Spam Sleuth on your computer to view the messages that were detected as spam and if you have been given permission you may also configure Spam Sleuth to do an even better job at detecting unwanted junk e mail To run Spam Sleuth you just need to launch SpamSleuth exe from the server location You may have been sent a welcome e mail with the location of SpamSleuth exe If you have you can run it by going to Start gt Run and entering the full path to SpamSleuth exe It will look something like this SERVER SLEUTH SpamSleuth exe The first time your run Spam Sleuth it will ask for a password There is a pretty good chance that you don t have a password yet Just leave it blank and it will take you to Configure Your Account and prompt you to create a new password Since you probably don t want to run it that way every time we have added a check box that lets you put Spam Sleuth right in your Start Programs
18. cannot edit the pre defined filters You can turn them on or off If you want to change them just make a copy by selecting one and hitting the Copy button Then you can turn off the pre defined filter and tailor the copy to your own liking The pre defined filters use a powerful regular expression syntax that allows complex pattern matching The details of the regular expression syntax are listed in Appendix A Be careful as some complex regular expressions can take a long time to match in a large e mail message 3 1 18 Bayesian What if there was a way that a computer could learn what spam looks like then detect new and novel messages without being told about specific words or phrases The Bayesian Analyzer does this It looks at your previous e mail and learns the characteristics of 2004 Blue Squirrel Spam Sleuth User s Guide spam and good e mail Just like a baby it needs to be taught right from wrong By marking your messages as Good or Spam and then Train the Bayesian Analyzer you can teach it right from wrong Then it can contribute to the decision of whether a new e mail is spam or not LI ij x au IV Active Uses statistical word probabilities from your previous e mails to determine the probability Power Filter that a new e mail is spam NA Max Points 200 Train View Statistics g Configure Advanced Bouncer mm Fl Cancel Help The Bayesian Analyzer uses statistics
19. decide how long to keep it in storage We ve set the default to 30 days but you might only want to keep it for 5 days Once a day Spam Sleuth will clear out messages that are too old to keep If you lower this number and the spam doesn t immediately 2004 Blue Squirrel 12 Spam Sleuth User s Guide disappear don t worry wait a day and Spam Sleuth will clean out the old spam You also have a choice to never delete spam We don t recommend this option because spam will just take up your computer s resources You can choose to never keep spam We don t recommend this option because if Spam Sleuth mistakenly flags a good message as spam you will not be able to recover it If you don t keep spam for some short period of time you cannot train Bayesian use Turing or EMail Stamps Spam Sleuth will ask for confirmation when deleting spam unless you uncheck Ask for confirmation when manually deleting spam Friends How can you make sure a message from a friend relative or co worker is not tagged as spam Spam Sleuth has an analyzer called Friends which overrides all of the other analyzers If the e mail address of your friend is listed in the Friends Analyzer it will let messages right through to your e mail program What if don t want to add everyone in my whole company to my friends list but want to get their e mails That is easy simply add a wildcard friend to the Friends Analyzer Use the to represent a
20. default e mail program lt e mail address gt Check that account only Check All Accounts Scans all active e mail accounts for spam Exit Exits the program Using this Exit will completely shut down the program and Spam SleuthTM will not be able to prevent spam from getting into your e mail program unless it is running 3 1 Configuration of Analyzers Each Spam Sleuth analyzer has a different task and analyzes the e mail using different criteria To configure each analyzer right click on the Spam Sleuth icon and scroll down to the configuration dialog for each analyzer The Analyzers are plug in modules that can analyze an e mail assign points contribute to the spam report and act on the e mail if necessary 2004 Blue Squirrel Configuration 11 3 1 1 Score xi Set your Spam tolerance You may need to i l adjust these numbers if you turn on additional analyzers or change points for an analyzer Increase the Spam Score to allow more e mail through Decrease to catch more spam but possibly catch some desirable e mail Spam Thresholds E mail is spam if score exceeds ft 90 Stop analyzing if score exceeds 5000 Permanent trash if score exceeds fi 0200 Active Directory Spam Management Delete spam after 30 days LO Friends M5TR nonas Never automatically delete spam Te C Don t save spam MailingLists MSTR IV Ask for confirmation when manually deleting
21. for large ISPs to screen out spam by just the subject They tack on a unique sequence of letters or numbers to the end of the subject so the subject is always different for each message The Subject Analyzer also looks for that little trick TU Xx li IV Active Analyzes the subject of the message for spam like characteristics Dictionary R ago Increase the points if you find that this reliably S catches your unwanted e mail Subject 2g Points for AD Y 180 HTML Sk Points for excessive spaces 75 F Points for no subject line 10o EL Points for empty subject 25 Charsets Blacklists HTML Removal we xl Cancel Help The Subject analyzer looks at spam like characteristics of the subject of a message You can change the maximum number of points that this analyzer can contribute to the total score Very seldom will a subject be blatant enough to warrant the maximum score Points for ADV The text ADV is supposed to appear on advertising e mails If everyone did this like they are supposed to there would be no need for Spam Sleuth For the few that do this quickly catches them as spam Points for excessive spaces This catches e mails with a trick subject The spammers will tack on some random letters at the end of a subject to keep simple subject filters from filtering them out Since they put these letters at the end of the subject there is an excessive number of spaces between the real subject
22. is a constant battle between the Spam detection programs like Spam Sleuth and spammers We know what some of the spam looks like because we ve seen it before but unfortunately there will be new things to sell and unscrupulous companies out there that will try to hawk their wares using spam Spam Sleuth uses a collection of Analyzers including Friends Spammers To Goodwords Badwords Profanity Subject Attachments Charsets HTML Volume Bouncer and others to detect and eliminate spam e mail before you even see the messages This section of the manual will briefly cover the Analyzers that you have at your disposal and how to configure them for your needs For more information about configuring Spam Sleuth s Analyzers refer to the Interface section What makes an e mail spam Technically spam is an e mail that you didn t request that is commercial in nature and is trying to sell you something or get you to do something If you signed up for a newsletter and that newsletter has a sales pitch for the company s product it isn t technically spam If you forgot that you signed up then it sure seems like spam when it arrives How does Spam Sleuth distinguish between spam and a legitimate newsletter That is very hard to 2004 Blue Squirrel Spam Sleuth User s Guide 2 2 1 do because the spammers try to convince you that you did sign up with them or their marketing partner Since there isn t currently a way to distin
23. mail address e E Mail Loop Detection Won t send another Turing Request to the same e mail address within an hour to avoid rapid sending back and forth with a vacation auto responder 3 1 19 1 Turing Test The Turing Test is named after Alan Turing Alan proposed a test in the 1950 s to distinguish a human from a machine The Turing Test used by Spam Sleuth is a simple test which is not easily automated by a computer The test taker simply enters the letters shown into a box The letters are partially obscured to make it more difficult for a computer to pass the test 4GEZR Tok Enter the letters and numbers above into the box and hit OK and the original e mail you sent will be approved for release When a Turing Test is requested an e mail will be sent back to the sender which requests that they click on a link and verify that they are human Once they ve passed this simple test a message will be sent to your e mail box which releases the original e mail to your InBox The net effect is that you can set your spam screening even tighter lower your spam threshold score with assurance that if a good message is mistaken for spam the original sender will get a chance to prove they are not a bulk spammer and their message will be delivered 2004 Blue Squirrel 36 Spam Sleuth User s Guide 3 1 19 2 Sample Turing Message use Spam Sleuth to screen all my e mai
24. may be missing and still cause a match men and women are attacked and killed by sharks 3 2 If the default span of zero is desired the previous expression could be entered as men and women are attacked and killed by sharks 2 Proximity Searches To find two or more words near each other but in any order use a proximity search For example enter taxes deductions This finds taxes after all the deductions as well as deductions figured from state taxes The brackets indicate that you want to find the words within a certain span or range The default width of the span is 20 words You may override the default For example here we make the span 10 2004 Blue Squirrel 60 Spam Sleuth User s Guide federal deductions taxes 10 You may also specify an expendable count In the following example we allow two words to be missing from those specified federal and state deductions taxes 10 2 Boolean Searches To find all documents containing shark whale or dolphin or any combination thereof use the vertical bar character shark whale dolphin To find all documents containing both sea and ocean use the ampersand character sea 4 ocean Nested Expressions Any place that you can use a single word in an expression you may also use a phrase proximity or OR sub expression Here are some examples failed gave up deep sea diving scuba or equivalen
25. need the original message you can right click on it and choose UnSpam Good message This indicates an e mail message that was assigned points by the analyzers and the total points did not reach the spam threshold It is important to note that the Good message and Spam message status is set at the time the message was analyzed and does not change automatically when you change your spam threshold score 2004 Blue Squirrel Configuration 45 3 2 3 3 2 4 3 2 4 1 Right Click Menu E View O Mark as Good UnSpam Mark as Spam Export 2 Turing Test Request g Bounce o Bayesian test Cg Add to To List amp Add to Spammers EL Add to Mailing Lists Add to Friends View Lets you view the message in the safe viewer Mark as Good UnSpam Sends the e mail back to your e mail program The message is re mailed to your internal server Mark as Spam You only need to use this if you intend to use the Bayesian Analyer This option lets you categorize e mail as spam Export Saves a copy of the message uncompressed to a directory Delete Deletes the message will confirm if you have deletion confirmation turned on Messages will be sent to the Recyle Bin unless you hold down SHIFT Rescore Lets you re score a message This can be used for tuning Scores may not be identical because some meta information is not available on rescore Turing Test Request Only available if th
26. not be available if your Administrator has disabled the option for security reasons Tag Mode X Text Classification Adds X Text Classification spam to the header of every spam message so messages can be sorted by your e mail program In this mode all messages are passed through with one of these headers added if the message has been determined to be spam or has been modified for script viruses etc 2004 Blue Squirrel Spam Sleuth User s Guide e X Text Classification spam e X Text Classification modified Spam Detection Basics The problem of spam is getting worse Internet researcher Jupiter Media Metrix estimates that consumers will receive about 206 billion junk e mailings in 2006 an average of 1 400 per person compared with about 700 per person this year Source news com article March 21 2002 The same article stated that spam costs an estimated 51 per piece in lost productivity Although this estimate seems high spam certainly does waste time and money Spam Sleuth will recover that time and money for you The goal is to eliminate spam or unwanted e mail while retaining all the e mail that you want Spam Sleuth gives you the tools to make this happen Spam Sleuth does a great job without any configuration except for your e mail account It performs even better if you provide it with additional information about what you consider valuable e mail Most friends and business associates th
27. spam faa hi Cancel Help Spam Threshold The Score dialog lets you set your personal spam tolerance threshold Start with the default settings Then look at the spam that was caught and the spam that wasn t in the Mail Jail If you are getting too much spam in your InBox decrease the spam threshold If you are losing too many real messages increase the spam threshold Stop Threshold To be more efficient Spam Sleuth can stop analyzing if the Spam Score exceeds a certain level If you don t have any GoodWords or Bayesian then you can set this to the same value as the Spam Score Good Words and Bayesian can deduct points from the spam score to allow an e mail through which may pertain to something you want If the spam score gets too high then the GoodWords aren t going to help you may as well let Spam Sleuth quit analyzing Trash Threshold If the Spam Score gets too high there may be no reason to even keep the message in the Mail Jail If it is such blatant junk spam let Spam Sleuth permanently delete it If you don t like storing any spam just set the Permanent Trash Score lower than the Spam Score If you never want to permanently trash e mail set this to the highest level of 999 999 Spam Management The spam will keep on coming but you probably don t want to keep it forever Spam Sleuth does compress the messages so they take less room on your computer Spam Sleuth will permanently delete spam after so many days You
28. spam e mail If you would like Spam Sleuth to use more or fewer words in its calculation you can change it in the Advanced settings The end result from the Bayesian Analyzer is a probability that the e mail is spam This is converted into points using an logarithmic algorithm which adds or subtracts many points when the Bayesian Analyzer is certain of its decision The Bayesian Analyzer adds or subtracts only a few points or none at all when it is not very sure whether an e mail is good or spam 2004 Blue Squirrel 32 Spam Sleuth User s Guide 3 1 18 2 Train The Bayesian Analyzer needs to train with good and bad e mail before it is able to detect spam By default the program does not keep any good e mail To keep good e mail for training go to Miscellaneous and tum on Score and store non spam messages The Bayesian Analyzer needs at least 100 good e mails and 100 junk e mails to work well If you do not have enough e mail you should wait until you do This analyzer is only as good as its data Make sure you have Un5pammed any good e mail and Marked any bad e mails as bad before you train this Analyzer Bad need to be red and good as green Choose only the accounts in which you have classified the spam The Analyzer will detect spam for all the accounts but for training it is very important that you have marked spam as spam and good as good pag at ie Ten MyPrivateAccount excite com 0 0 MyWebAcct
29. to determine whether an e mail is spam based on analysis of previous e mails We have included a brief description of how it works Add and subtract points Max Points sets the maximum number of points that the Bayesian Analyzer can contribute the spam score If the Bayesian Analyzer is not certain then only a couple of points might be added or deducted Only add points to spam Setting this option will cause the Bayesian Analyzer to only add to the spam score The number of points it adds is determined by the statistical analysis Add and subtract points Setting this option will allow the Bayesian Analyzer to add points for spam and deduct points if the e mail message is determined statistically to be a good message With this option set the Bayesian Analyzer can add or deduct Max Points You must train the Bayesian analyzer with previous e mails Training is not difficult but it does require that you correct any mistakes that Soam Sleuth might have made in the past You must also let Spam Sleuth keep your good e mail so that it has both spam and good e mail with which to train Steps 1 Turn on Score and store non spam messages 2 Correct any mistakes by using Mark as Good and Mark as Spam 3 Hit the Train button 2004 Blue Squirrel Configuration 31 Train Lets you train the analyzer with previous e mails View Statistics Lets you see how many e mails have been trained and the distribut
30. 0 360366 This shows the statistics for the Bayesian Analyzer If you have not trained the Bayesian Analyzer you must train it first 3 1 18 4 Advanced Bayesian Advanced Settings Significant Words fi 5 D Prune dictionary after training This lets you set some advanced features and settings of the Bayesian Analyzer Significant Words By default the Bayesian Analyzer uses the 15 most significant words by their probability to determine whether the e mail is soam or good Prune dictionary after training determines whether the dictionary will be purged of non significant words before saving The non significant words are words that have not appeared enough times in your spam or good e mails to be considered in the calculations This is not selected by default because if you train incrementally the word counts need to be retained because one additional e mail might cause the word to be significant If you Prune the dictionary after training the dictionary file will be smaller but the word counts for non significant words will not be retained for future training sessions 2004 Blue Squirrel 34 Spam Sleuth User s Guide 3 1 19 Turing What if there were a way to make sure you get good e mail even if Spam Sleuth detected it as spam for some reason Well there is but you have to turn it on We highly recommend that you turn this Analyzer on The only reason it isn t on by default is that it sends out e ma
31. 2004 Blue Squirrel Introduction and Getting Started 5 1 2 Configure Your Account x pa Configure your account settings sth Password Username Password 7 Score and store non spam messages IV Delete messages after UnSpamming Add Icon to Start gt Programs T Auto Login I Tag Mode T ext Classification Password The first time you use Spam Sleuth you will be prompted to add a password The password you use does not have to be the same as the password you use for your e mail The password is just for the Spam Sleuth viewer and configurating your settings My Outgoing Server SMTP requires authentication Set your name pwd if your company s e mail server requires a password Most users will not need to set anything here Score and store non spam messages Selecting this option will cause Spam Sleuth to keep all of your messages including ones that were not deemed to be spam This is useful for tuning as every message will have a report Delete messages after UnSpamming This causes Spam Sleuth to delete messages from the viewer when you UnSpam and send them back to your InBox This option is selected by default so that you don t see two messages one in spam viewer and one in your InBox Add Icons to Start gt Programs Adds an icon to the Start menu for conveniently launching Spam Sleuth Auto Login Stores the password and logs in automatically This option may
32. GoodWords will search the entire message including the header with the subject GoodWords supports limited wildcards You can put a at the beginning or end of a word Example MINI CAR would match all words like Mini Car MINI Cars mini CART BadWords Do you get e mails about flat hoses 50 University Diplomas and other useless junk Well we ve added a list of words and points to the BadWords Analyzer The BadWords Analyzer will catch a lot of junk e mail Feel free to add your own words and remove some of ours Change the points if you d like 2004 Blue Squirrel Configuration 17 x IV Active Add words that you do not want in an e mail paa Words listed here will INCREASE the Spam Bad score and decrease the likelihood that you will ye FS get the e mail in your InBox BARELY LEGAL 100 BARGAIN 25 BE REMOVED 10 BIG MONEY 50 a BINGO 50 Profanity BIZ DOMAIN 45 L BLACKJACK 25 U BODY FAT 35 BULK EMAIL 65 Pen BULK MAIL 50 BURN DVD 25 CASH 10 Subject CASH 10 CASINO 40 ag CELEBRIT 10 gi CENTRALREMOVALSERVICE 150 z HTML Volume ngg F zl Cancel Help BadWords are words that are likely to appear in unwanted e mail To add to the list just enter your word followed by followed by the number of points to assign for that word Spam Sleuth comes with a list of words that is periodically updated You can remove words or add words to this list Intellimingle w
33. RREL COM You cannot add DOMAIN COM 3 1 3 Mailing Lists How can you ensure that you get e mail from certain mailing lists while rejecting ones for which you aren t subscribed EN JimSmith hotmail com Spam Sleuth Oo x File Edit view Help V E O OD GR iE O O na ren msnnen z Play Like a Sultan lt VegasStyleCasino1118 8 12 2003 2 35 01 PM You could be a Winner 250 Gabriella Manzullo lt GabriellaM progstra 8 12 2003 2 35 15 PM Progressive Strategies eNews Cc a 796 Julianne Snyder lt bbzm7ile uymail com gt 8 12 2003 4 01 30 PM No Prescription Required Cheap P 8 1290 Free Postage lt contact livingabound com gt 8 12 2003 4 01 46 PM Receive Up To 525 FREE Postage 1292 Send Me Bargains2867 6616410 unsubscri 8 12 2003 4 11 41 PM Refinance before rates go up age Network Appliance Alerts lt alerts netap 8 12 2003 4 40 53 PM 8 12 2003 4 47 12 PM pn Lt Investor Insights lt InvestorInsi Current settings Spam Threshold 190 Permanent Trash 10200 Y E O Server On PRxY 10 10 Mailing Lists lets you by pass the analysis for the mailing lists for which you have subscribed It is very similar to Friends but will also check if the To matches the mailing list name Often times the From is someone you ve never heard of but they re sending to you by sending to the mailing list distribution system The To is usually the e mail address of t
34. ancssteriesutiacnecendasviveacectecensersusvduveedasiaeteinadsd 50 Customer Support 51 Spam Sleuth Help File ss ssssssnnnssnnneenenennensnnnneeneneenenessnnneeneeeenns 51 How to Find Specific Topics in the Help File sis 51 MISILOUK Web SN Ra NA Nana Naalaala 51 Technical Support ANAND NADAGANAN 52 Customer Service 11 aa aaaaannnnn nanan NAAN 52 Mailing GT Do LA 52 Reference 52 GIOSSANY AA AA AA AA AA AA 52 Appendix A Regular Expression Syntax ss iissssssnnnnnnnnnenees 53 Appendix B Advanced Filter Syntax ss issssssssnneseeeeeesssnnnneeneeennnns 59 License Agreement 2 444 4842504 anne sees once eee on cee sean ce eee on an 60 2004 Blue Squirrel Contents Index 63 2004 Blue Squirrel Spam Sleuth User s Guide 1 1 Introduction and Getting Started Welcome and thank you for choosing the best anti spam program available Spam Sleuth Enterprise has been chosen by your organization to help you win back your e mail accounts from the scourge of spam unwanted junk e mail When your e mail program gets your e mail the spam has already been removed and you can read your e mail the same way you always have but without sorting through the junk e mail to find the gems Spam Sleuth Enterprise removes the junk for you Your computer administrator will let you know how to run the Spam Sleuth Client program so that you can tune Spam Sleuth for your type of e mail With just a little
35. at write you letters are not going to have their messages flagged as spam You may however be on some interesting and informative mailing lists that have some spam characteristics If you let Spam Sleuth know what these are it will let them right through Once you ve added your mailing lists and most of your friends you can really crack down on the spam Because an occasional desirable message gets marked as spam Spam Sleuth will keep messages so that you can recover them The default is to keep them for thirty days but if you re a pack rat you can keep them longer Or you may figure if it is important enough they ll send it again and you can have Spam Sleuth trash the messages immediately Spam Sleuth will even let you do both if a message is bad enough you can have Spam Sleuth dispose of it immediately and permanently But if a message is questionable you can have it held for you in the Mail Jail Each person has their own individual spam tolerance Some like all real messages to make it into their InBox even if it means some spam may make it in Some like all spam removed even if it means a few real messages get flagged as spam as long as they can get those real messages back We have configured Spam Sleuth somewhere in the middle It will eliminate 95 of spam and occasionally a real message will be flagged as spam If a message that you really wanted is tagged as spam you can go to the Mail Jail and read it there in th
36. b site where they can pass an easy for humans test then the original e mail they sent will be marked as good and released to your InBox Add to Friends Selecting this option will add everyone who passes the Turing Test to your Friends list so their future e mails will be automatically accepted Show Confirmation Dialog Decide whether to show a confirmation when using right click to request a Turing Test 2004 Blue Squirrel Configuration 35 Play Sound when Turing Test Requested Plays a sound when requesting a Turing Test automatically or with right click To change the sound replace the TuringReq wav file in the program directory This is a really great Analyzer to turn on if you want to make sure you get e mails from long lost friends and people who are trying to reach you Edit Message Allows you to edit the Turing message The message will be available to be released by the Turing Test for the same number of days that you keep your spam The default is 30 days but you can increase or decrease it by going to the Score settings Important Note You should turn on Turing Test or EMail Stamps or Bouncer but you should only turn on one of them Advanced Capabilities e Trigger Message Absorption Deletes the message that triggers the release of an e mail so the entire process is transparent to you e Bounce Absorption Hides Turing Requests that bounce back because the spammer faked their e
37. ble file that looks like it came from a friend was actually sent by a virus reading your friend s e mail address book and sending everyone a copy of itself Unless you ve spoken with someone about a file they are sending you we recommend that you don t run any e mailed executable attachment Checking Not Friends will keep Spam Sleuth from removing attachments from e mails sent from your list of Friends and your Mailing Lists Before choosing this option please be aware that viruses are sometimes sent by friends unintentionally if their computer has been infected with a virus 2004 Blue Squirrel 20 Spam Sleuth User s Guide 3 1 10 Dictionary xl lv Active Compares parts of the message with a F dictionary to detect invalid words intended to Attachments throw off simple filters and bayesian analysis MV Use Master Dictionary M Use User Dictionary Edit Subject Points word Max words ag Fake words at end of subject 50 3 Ch HTML Volume Fake words at end of message ft 0 5 LER Charsets Blacklists A x Use Defaults Cancel Help The Dictionary analyzer uses an English dictionary to determine whether the words at the end of the subject and the end of the message are real Many spam messages use random letters at the end of the message or the subject to throw off simple filters and Bayesian analyzers The Dictionary analyzer detects these random letter sequences and assigns them point
38. ce is a message usually sent by an e mail server to let the sender know that their message was not deliverable The simulated bounce will let the spammer know that your e mail address doesn t exist anymore This will cause most of the junk e mailers to remove you from their list They don t want to spend their resources sending e mail to non existent accounts Using this will cut down on the amount of spam that you receive in the future It is turned off by default because it sends out e mail Bounce Method Bounce with my SMTP server only default Uses the SMTP server you have set for the account to send a non deliverable report bounce Bounce direct only Sends the non deliverable report bounce directly to the SMTP server of the sender This will usually be slower Choose this one if the default gives you a message every time that the bounce failed Bounce with my SMTP server then direct Tries to send using your SMTP server which may fail be rejected depends on your SMTP server and then it sends direct Important Note You should turn on Turing Test or EMail Stamps or Bouncer but you should only turn on one of them 2004 Blue Squirrel 40 Spam Sleuth User s Guide 3 1 22 Relay Do you want to screen e mails on a junk account and forward the good stuff to your real e mail account Or do you have an e mail account on your cell phone or PDA that you only want the really good e mail from Friends you
39. e Turing Analyzer is active Bounce Bounces an e mail See the Bouncer Analyzer for more information Bayesian Test Shows you the score that the Bayesian Analyzer would give the message Add to To List Adds the e mail address in the To section of the e mail to the list of acceptable addresses If you accept e mail to several different e mail addresses in the same account you should add every one to the To Analyzer Add to Spammers This will add the sender s e mail address to the list of Spammers so you don t get a message from them again Add to Mailing Lists This will add the To field of the e mail to the Mailing List Use this when the From field is always different but the messages are sent to a list such as wine enthusiasts mailserv net Add to Friends This will add the sender s e mail address to the list of Friends so you always get their e mail in the future Menu File 3 2 4 1 1 Configure Takes you to the Spam Sleuth configuration where you can configure the Accounts and Analyzers 2004 Blue Squirrel 46 Spam Sleuth User s Guide 3 2 4 1 2 Export Exports a message from its compressed format to a MSG file which can be read by a text viewer 3 2 4 1 3 Exit Exits the program This is different than hitting the X icon in the upper right hand corner The File gt Exit will close the program completely 3 2 4 2 Edit 3 2 4 2 1 Delete Deletes the selected message s permanently a
40. e phone book If the MX Record succeeds then we can do one more test the SMTP test The SMTP test takes some time We can check to see if there is a server there to accept our reply In the physical world this is equivalent of driving to the return address listed on the envelope and making sure there is a mailbox there 2004 Blue Squirrel Configuration 29 You may not want to do an MX record check and SMTP test on every e mail Put those domains in the box There are two good reasons not to do the test 1 Some domains don t allow an SMTP test without first sending e mail These would fail the SMTP test every time 2 Your business domain There is no reason to check your own domain every time At a company you would get lots of e mail from that one domain 3 1 17 Power Filter xi Ka lv Active Use rules to search in the header subject body and more Choose from some pre set aa rules or make your own Valid Sender eal O WebBug 9 gt US Address 50 Sofi TOO MANY CAPS 25 CJ US Phone Number 20 oz O Intemational Phone Number 10 Targ CO UK Postal Code 10 O E Mail Address 10 O State 10 EMal Stamps ees mg g 4 gt Bouncer Add Edit Copy E Cancel Help The Power Filter Analyzer lets you set up very powerful filters that work on specific parts of messages Set up filters that analyze just the Subject or only the Headers Some pre defined filters have been set up You
41. e spam viewer or you can just UnSpam it and it goes right back into your e mail program Spam Sleuth goes much further than its competition and we use that term loosely Spam Sleuth can also remove dangerous attachments strip out potentially harmful Java script eliminate image links that send your information and more Spam Sleuth is pre configured to remove attachments that can be executed on your computer All e mail viruses are spread by sending executable attachments which Spam Sleuth can remove If you know the attachment is not dangerous just go to the Mail Jail and UnSpam it Be careful though many times the attachments are sent from 2004 Blue Squirrel Spam Detection Basics 7 2 1 2 2 somebody you know but are still dangerous because your friend didn t send you the dangerous attachment the virus on their computer sent the attachment The folks who send these unwanted e mails are using tricks to defeat spam programs Some have even gone as far as encoding the message so that spam programs can t detect key words Spam Sleuth decodes the messages before analyzing them to counter this underhanded tactic As new tricks are devised by the spammers Spam Sleuth will counter them Spam Sleuth is designed so that new modules can be dropped in and immediately recognized by Spam Sleuth Spam Sleuth also uses InstantX and Intellimingle technology so that it can be updated over the Internet and
42. elements that follow Examples Character literals abc will match either of a b or c Aabc will match any character other than a b or c Character ranges a z will match any character in the range a to z A Z will match any character other than those in the range A to Z Note that character ranges are highly locale dependent they match any character that collates between the endpoints of the range ranges will only behave according to ASCII rules when the default C locale is in effect For example if the library is compiled with the Win32 localization model then a z will match the ASCII characters a z and also A B etc but not Z which collates just after z Character classes are denoted using the syntax classname within a set declaration for example space is the set of all whitespace characters The available character classes are alnum Any alpha numeric character alpha Any alphabetical character a z and A Z Other characters may also be included depending upon the locale blank Any blank character either a space or a tab cntrl Any control character digit Any digit 0 9 graph Any graphical character lower Any lower case character a z Other characters may also be included depending upon the locale print Any printable character punct Any punctuation character space Any whitespace character upper Any upper case character A Z Other characters may als
43. er External Refs Because HTML can reference other web pages it is very likely that just viewing an HTML e mail will cause you computer to request web pages The clever spammers will track those requests and know that you ve viewed their message You can add points for external references or eliminate them altogether by checking the checkbox for Remove from e mail Web Bugs Use of Web Bugs is a common practice among spammers They will use IMG SRC tags in their e mails which cause your computer to request an image when the e mail is viewed This wouldn t be so bad except that now they tack your e mail address onto the image request so that they know that you viewed their message This seemingly safe image request will tag your e mail in their database as live and you will get even more spam Read Receipts This is an e mail header tag that tells some e mail clients to notify the sender that you ve read their message Some e mail programs ignore it some let you decide whether to notify the sender and some just notify the sender automatically Spammers don t use these very often but you may want to remove the Read Receipt Request tags from your e mail Assign points to these as you wish Some valid newsletter use external images and some use internal images If you don t subscribe to newsletters you may want to increase the points 3 1 16 Valid Sender Have you ever wondered what would happen if you replied to spam and asked them to remo
44. ers Characters by code 2004 Blue Squirrel Reference 57 This is an extension to the algorithm that is not available in other libraries it consists of the escape character followed by the digit O followed by the octal character code For example 023 represents the character whose octal code is 23 Where ambiguity could occur use parentheses to break the expression up 0103 represents the character whose code is 103 010 3 represents the character 10 followed by 3 To match characters by their hexadecimal code use x followed by a string of hexadecimal digits optionally enclosed inside for example xf0 or x aff notice the latter example is a Unicode character Word operators w matches any single character that is a member of the word character class this is identical to the expression word W matches any single character that is not a member of the word character class this is identical to the expression word lt matches the null string at the start of a word gt matches the null string at the end of the word b matches the null string at either the start or the end of a word B matches a null string within a word The start of the sequence passed to the matching algorithms is considered to be a potential start of a word Buffer operators C matches the start of a buffer A matches the start of the buffer matches the end of a buffer
45. es The syntax of the regular expressions used in Spam Sleuth can be found in Appendix A SMTP Simple Mail Transfer Protocol A specification for an e mail client to send e mail to a server or for an e mail server to send e mail to an e mail server Based on RFC 821 SMTP specifies how e mail is sent Turing Test Named after Alan Turing it is method of determining whether the sender was a human or a machine A test is given to the sender which is difficult for a machine but trival for a human VIP Key An unlock code that you should have if you ve purchased the program It is usually e mailed to you if you purchased online It should also be on the CD or the Manual if you have the hard copy 6 2 Appendix A Regular Expression Syntax This section covers the regular expression syntax used by Spam Sleuth s Power Filter when using regular expressions for matching strings Literals All characters are literals except 2 4 COU CUES ES J TA and These characters are literals when preceded by a A literal is a character that matches itself Wildcard The dot character matches any single character except 2004 Blue Squirrel 54 Spam Sleuth User s Guide Repeats A repeat is an expression that is repeated an arbitrary number of times An expression followed by can be repeated any number of times including zero An expression followed by can be repeated any numbe
46. es that you use Spam points will be added if you are not listed in the TO or CC fields JIMSMITH HOTMAIL COM JSMITH ATT NET 6000 27 Good Words Baa 1 BadWords X Fe Profanity 33 points if not listed in the TO CC or BCC ti fi 20 points for more than 8 recipients Attachments Fe Cancel Help The To list should contain all the valid e mail addresses for you If the message is not addressed to one of your e mail addresses then it will get spam points Often unwanted e mail has ten or more people listed in the To or CC Spam Sleuth can assign points for this You decide how many people is too many and how many points You may be wondering how the message could get to you without your e mail address being listed The server that sent it specified that it was for you but the text of the message which you see To joe xyz com can be anything and does not have to list your name Often times it is more efficient for a spammer who may be sending millions of message to make one message and blast it out and have other servers deliver them Just like when you get junk regular mail at home addressed to Resident the To address might contain something generic like Homeowner The To Analyzer supports limited wildcards You can put a at the beginning or end of a word Example MYCOMPANY COM would accept all e mail addresses that end in MYCOMPANY COM 3 1 6 GoodWords Do you
47. essage reaches the points threshold that you set Anyone listed in Friends or Mailing Lists will not get the EMail Stamp request Most messages that do not have junk characteristics will not trigger the request unless you set the custom points very very low You set the amount requested It can range from a penny 0 01 to almost a thousand dollars 999 99 Do not expect to get rich from this Most spammers do not look at the responses to their blast e mails Thirty seven cents 0 37 is a reasonable amount A long lost friend might pay it to get in touch with you and you can give the money back when you go to lunch Spam Sleuth queues the e mail and if when payment is made the e mail is released to your InBox To use this Analyzer you will need an active PayPal account You can click on the Sign up for a PayPal Account if you don t already have one Itis free to sign up but you do provide a credit card or bank account PayPal is an independent third party payment processor The PayPal sign up link does send our affiliate ID to PayPal as a referrer For this Analyzer to work properly your PayPal account must be linked to your e mail address A PayPal account can have up to seven e mail addresses Edit Message Allows you to edit the EMail Stamp outgoing message 2004 Blue Squirrel 38 Spam Sleuth User s Guide 3 1 20 1 3 1 21 If you want to read the message before the sender spammer pays you you can
48. euth and hit CTRL ALT L to set the logging level Spam Sleuth Enterprise Logging x 30 Errors Only D mn 4 H C Normal __ Cancel C Debug Errors Only Logs errors for use in tracking problems Normal Logs information about start up accounts and shut down Debug Logs the detail of the conversations between e mail programs and servers Passwords are not logged even in debug level 2004 Blue Squirrel 50 Spam Sleuth User s Guide 43 Tips and Tricks 4 3 1 Shortcut Keys 4 3 2 4 3 3 You can use the following shortcut keys to access features quickly without menus or using your mouse Spam Sleuth must be active and the Mail Jail window must be open e ESC Minimizes the Mall Jail window e F5 Refresh messages from server e F4 Changes the active account in the Mall Jail e CTRL M Checks e mail in the active account e ALT U U nSpam a message e ALT G Mark a message as G ood e CTRL ALT L Set the logging level The log is stored in the same directory as the program and is named SpamSleuth LOG For efficiency a new log file will be created when log becomes too large The old log file will be named SpamSleuth 1 LOG Positive Tuning Positive Tuning is making sure that the e mail you want to receive is able to make it through to your InBox and will not be tagged as spam Here are some recommendations e Add all your friends and co workers to the Friends list e Add any mailing l
49. f a book either forward or backward How to Find Specific Topics in the Help File The Help system displays both the Contents and Index lists providing alternative ways to get information pertaining to a specific topic The list of Contents shows the major categories of Help When a category is chosen you ll be presented with Help text directly or a pop up menu of topics from which your choices will be narrowed The index allows you to look up a word or phrase you have in mind Type the word or phrase or look in the alphabetical list for your topic select it and click Display Clicking on the highlighted word or phrase brings up a list of Associated Topics Double click on any associated topic to read the contents Or double click on the word or phrase to go directly to its first associated topic If you prefer to browse or read straight through Help go to any topic as a starting point From there use the gt gt and lt lt buttons to move through topics forward or backward You can read through the entire Help system in this way Visit Our Web Site Program Web Site http www bluesquirrel com products SpamSleuthEnterprise If you cannot find the information you need at the program web site try our FAQs located in our Technical Support area for assistance http www bluesquirrel com support 2004 Blue Squirrel 52 Spam Sleuth User s Guide 5 4 9 5 5 6 Technical Support http www b
50. faul ee JV MX Record test fi 00 Default 100 Nag F SMTPtest 50 Default 50 Bayesian Ka Don t check these domains a BLUESQUIRREL COM Turing HOTMAIL COM EMail Stamps Fa a Cancel Help The Valid Sender Analyzer looks at the sender of the e mail to determine their willingness to accept a return e mail Usually spammers don t want to be contacted They send out millions of e mails and if even 1 replied to ask a question it would be very bad for them The first test is whether the From is equal to the Reply To address E mails can have one address that specifies where it is from often a lie and another address for where a reply should go If the two don t match it is a indication of spam Sometimes a company not very reputable will contract with another company to handle the spam responses In this case From might be joe slimeycompany com while the Reply To could be bucket spam handler com The second test is whether there is a real e mail address to which you could send a reply The spammer might send no From address at all If the From is blank it probably means they don t want to be contacted and the probability is high that the message is spam An MX Record test takes a few seconds Your computer will look up the e mail address and make sure there is an IP address available to send a reply if you wanted to send one In the physical world this would be equivalent of looking up the return address on an envelope in th
51. give points to e mails i that use foreign character sets These e mails usually appear to be complete gibberish in HIR most e mail programs HTML Volume Points Charset US Standard ASCII Chinese PRC 200 mom ST mines men ann Blacklists HTML Removal my FE If you are in a non English speaking country uncheck the characters that your language frequently uses M Scan Subject Character Points 4 Valid Sender M 1 80 20 T Scan Body M 1 81 20 Power Filter nG Edit M a a Cancel Help The Charsets Analyzer lets you get rid of that annoying Chinese and Korean spam Since most e mail viewers don t show characters in the Chinese character set these e mails look like a string of gibberish like this POYOU A NO p O5 At XEB34 OANl Unless you read Chinese or Korean we recommend that you leave the default characters sets checked The Latin character sets are used by many regular e mails so we recommend that you leave it unchecked Spam Sleuth can also check for any high bit characters These are characters that are above the 127 in the ASCII set All high bit characters are selected by default They are usually only used by non English speaking countries If you are in Germany we recommend that you uncheck characters in your character set such as and If you are in Mexico we 2004 Blue Squirrel 24 Spam Sleuth User s Guide 3 1
52. guish the two we simply define spam as e mail that you don t want Points System How does Spam Sleuth defeat spam Each Spam Sleuth Analyzer Friends Spammers To Goodwords Badwords Profanity Subject Attachments Charsets HTML Volume etc looks at your e mail a different way and can assign points The more points an e mail message receives the more likely it is to be deemed as spam The less points an e mail message receives the more likely it is a real gem Think of it as though it was a contest and each Analyzer is a different judge and the messages are the contestants and Spam Sleuth is the scorekeeper Every judge looks at the e mail message and assigns points based on specific criteria Then all of the points are added together to create an overall total More points is bad and less points is good In the first alpha version of the program Spam Sleuth sent all the votes to Florida to get a decision but it always came back a tie and nothing ever happened only kidding The number of accumulated points determines if the e mail message is real or spam If the overall total is less than the threshold Spam Sleuth classifies this message as a real gem and it will be passed through to your e mail program for viewing If the overall total exceeds the threshold settings in Spam Sleuth the message is deemed as spam and it will either be placed in the Mail Jail for 30 days or it will be deleted immediately Spam Sleuth has 3 different thre
53. he mailing list Add your mailing lists here 3 1 4 Spammers What if keep getting e mails from the same person or company and don t want them anymore Just add them to the Spammers Analyzer This analyzer overrides all analyzers except for the Friends Analyzer Just add the e mail address of the person or company and they go straight to the Mail Jail Use wildcards to eliminate all e mail from a company 2004 Blue Squirrel 14 Spam Sleuth User s Guide x EE lv Active E mail names and e mail addresses listed here will not make it to your InBox Add junk MailingLists mailers spammers and mailing lists to which you DID NOT subscribe A4DPROIMAILER COM ATLASREWARDS COM ad wE SOMEOFFERS NET BANG OLUFSEN NET BIGLIST COM BLACKFREAKAZOIDS COM CHEAPTRIPS COM CONSUMERTODAY NET CONSUMERYENUE COM COVERCLICKS Baa CURRENTMAIL COM V GDMX0 COM Badwords EVALUEMARKETING COM Fan FREECOUPONMAIL COM GREATMARKETING US x HELPFULOFFERS COM Profanity gt fh cl cence Hep List all the e mail address of known spammers If you don t want to see another e mail from someone just add their address to this list Use the to remove an entire range of e mail addresses Put in BADCOMPANY COM to block all e mail addresses with BADCOMPANY COM in them E mails are not case sensitive so don t worry if the letters are all capitalized Spammers suppo
54. his syntax Boolean and other search logic are rich and complex topics which often take up a full semester of a college level course Obviously a full explanation is beyond the scope of this Appendix However most Web searches do not require a full range of Boolean expressions but rely on a limited subset of the possible queries In this section we present some examples of valid expressions in both standard English and their search syntax counterparts The syntax examples given here could be all or part of an expression entered in the Query text box of WebSeeker s Advanced Refine dialog Individual Word Searches To search for the word shark simply enter it as is shark Phrase Searches To search for the phrase great white shark use parenthesis and quotes great white shark That last search looks for all three words in the order shown with no intervening words Sometimes you would like to maintain the specified ordering but are willing to accept intervening words To find men are attacked by the great white shark you could type the following which allows 3 words between each pair of words men attacked shark 3 Of course the above phrase would also find something like men are attacking and killing sharks Sometimes because you re unsure of all of the words in a phrase you may wish to specify that one or more of the words in the phrase are expendable For example the following example specifies that any two of the words specified
55. hotmail com 0 0 abcde bluesquirel com 29 3 0 Close Begin Training To train the Bayesian analyzer you should have good e mail and spam e mail You should have at least 100 of each If you do not have 100 of each we recommend that you wait until you do If you do not have any good mail then make sure you have turned on Score and store non spam messages Choose only the accounts for which you have categorized the e mail as spam and good The spam messages should have a red dot next to them and the good messages should have a green dot next to them Spam Sleuth will do most of the work automatically but you need to correct any mistakes it may have made before training Begin Training starts the training If you have trained on some e mails already then any new e mails will be added to the dictionary Reset Training will erase all the training We recommend you do this if you have bad training The Trained will always show 0 when you enter The trained will change as it trains 2004 Blue Squirrel Configuration 33 3 1 18 3 View Statistics Statistics Total Messages 654 Spam Messages 562 Good Messages 92 Ratio of Spam to Good 6 11 Dictionary Statistics Mean 0 748809 Geometric mean 0 511256 Harmonic mean 0 113583 RMS 0 831 Median 0 99 Mode 0 99 Percentile 0 5 0 99 Quartile 1 0 467733 Quattile 3 0 99 Variance 0 129864 Standard deviation
56. il The Turing Analyzer will send a challenge e mail message to any message detected as spam and give them a chance to take a test to let their message through The spammers won t do it but everyone else will x na T Active Require a human response Q Request a human response for e mail that is Power Filter vm deemed spam If the sender passes the ee Turing Test then the the e mail will be automatically allowed through to your InBox KA Bayesian Send a Turing Request Message if the score is between 21 4 and 10199 Both must be between Spam Score of 190 and Trash Score of 10200 Iv Add to Friends when Turing Test is passed EMail Stamps M Show Confirmation Dialog Right click test only N Play Sound when Turing Test is requested Test Bouncer ES Send direct no SMTP server x Relay Edit Message ina Cancel Help The Turing Test is a great way to make sure you get important e mails but still screen out the automated spam It is not on by default but we recommend that you turn it on The default is to send a Turing Test for all messages between the Spam Score and the Trash Score You can choose a different range if you d like If an e mail is determined to be spam you can request a Turing Test This request will send an e mail back to the sender requesting that they prove they are human and not an automated spam machine There will be a link in the e mail that takes them to a we
57. il is allowed If your time is worth more than a nickel a message just change it to a dollar or more We recommend turning on Turing or EMail Stamps but not both 2004 Blue Squirrel Configuration 37 x aa T Active Require EMail Stamps for spam e mail s Let marketers pay for your attention Senders Power Filter pay directly to your PayPal account then the ee program will allow that one e mail through pie My attention is worth 0 37 per message Paisa Send a Stamp Request Message if the score is between TE 214 and 10100 Both must be between 5pam Score of 190 and Trash Score of 10200 a Add to Friends when stamp is accepted EMail Stamps lv Show Confirmation Dialog Right click stamp only E IV Play Sound when stamp is requested Jest Turing Bouncer Make sure that you have added all of your active e mail addresses to your PayPal account If you do not have a PayPal account click on the button below Relay Edit Message Sign up for a PayPal Account 7 Cancel Help The EMail Stamps Analyzer is not active by default The EMail Stamps Analyzer will automatically request a payment from an unknown sender When an e mail reaches a certain points threshold it will ask for an EMail Stamp The sender probably a spammer will receive an e mail requesting a payment be made to allow their e mail to be released to your InBox The request e mail is not sent unless the m
58. ill automatically add your words to the Spam Sleuth master list of words If you remove a word Intellimingle will remember that you ve removed that word so that when we update the master BadWord list Spam Sleuth won t analyze for the removed word Feel free to customize this list If you feel that you will never get a real e mail about SuperBiz then feel free to boost the points for that word to 1000 BadWords will search the entire message including the header with the subject The really profane words are in the Profanity Analyzer BadWords supports limited wildcards You can put a at the beginning or end of a word Example MINI CAR would match all words like Mini Car MINI Cars mini CART Profanity Are you afraid that some really profane e mails will be seen by your kids If you have kids you may want to really increase the points in the Profanity Analyzer We have added several words for you and you can add your own words as well No worries the Profanity Analyzer doesn t list the words so you don t have to worry about them being seen by innocent young eyes 2004 Blue Squirrel 18 Spam Sleuth User s Guide x Bad FN Active The list of profanities is hidden to avoid 27 corrupting impressionable minds You may Badwords el add profanities and remove them You may BA also choose whether or not to see the knee danas profanity in the report Profanity Profanity 27 active Add De
59. ion of probabilities Export Export the word probabilities to a comma separated CSV file Import Import the word probabilities from a comma separated CSV file 3 1 18 1 How Bayesian Analysis Works The Bayesian Analyzer uses Naive Bayesian statistics to calculate the probability that an unknown e mail is spam or not It uses the information from your previous e mails to make its determination Every e mail is broken down into words For every word the analyzer figures out the probability of a message being spam if that word appears in the text of the e mail This information is built during training In order for the Bayesian Analyzer to figure out these probabilities it must know in advance whether an e mail is spam or good Therefore it is critical that you correct any mistakes that Spam Sleuth may have made before training If you don t correct the mistakes the Bayesian Analysis will reinforce the mistakes Once the Bayesian Analyzer has figured out the probabilities for the words it stores them in a dictionary file If you want to see the word probabilities you can Export the file in comma separated format When a new e mail comes in it is broken down into words and the 15 most influential words are used to calculate a probability that the message is spam using formulas established by Thomas Bayes The most influential words are those that have probabilities near O absolutely a good e mail or near 1 absolutely a
60. ise accepted F HIR Charsets Checks the IP of the reply address against known spam servers Blacklist Points HTML Removal O Maps 50 H SpamCop 150 O Osirus 50 Valid Sender C FIVETEN 50 O sPews 50 Eh CO Spamhous 50 Power Filter O Open Relay DB 50 Pe PA ee En o na NAY Bayesian Edit Selecting one Blacklist is usually sufficient zj Cancel Help The BlackList Analyzer uses free blacklist databases to check whether the e mail in question was sent by a known spam server These databases allow Spam Sleuth to look up an IP address and determine whether it came from a known spam sending machine 2004 Blue Squirrel Configuration 25 blak list n v list ed list ing a list of persons who are under suspicion disfavor or censure or who are not to be hired served or otherwise accepted You may be tempted to turn on all of the black lists but it really isn t necessary Most of them contain the same or at least similar information Some of them are subsets of the others It would be better to increase the number of points assigned when the one blacklist reports that the e mail was sent by a known spam server By default Spam Sleuth uses SpamCop which seems to be one of the more accurate lists These lists are built in different ways Some of them use spam traps where they put a brand new e mail address out on a web page and then trap e
61. ists to which you subscribe to the Friends list e Add any topic that you are interested in to the GoodWords list This may include sports hobbies services product names people s names etc Once you ve done this then you can go to the Score analyzer configuration and lower the spam score This will catch more spam If you ve done a good job with the positive tuning your desirable e mail will be getting through and the spam will be kept out Twice a week or at your leisure open the Mail Jail and sort by Score Quickly scan for e mails that are not spam Usually these will have alow score If the sender should be on your Friends list just right click and Add to Friends For each desirable e mail that was tagged as spam look to see if there are identifying characteristics that you can use so that you get the message in the future The easiest is of course to add the sender to the Friends list There may be a better way Perhaps you can add the entire domain to the Friends list or add a GoodWord that will let similar messages reach you in the future The goal of positive tuning is to find out why friends and non spam were rejected and fix it without allowing an easy way in for spammers Negative Tuning e Once you ve done the positive tuning watch for spam coming into your InBox Look at the e mail and see if it could ve been tagged as spam Does it have spam like words gt Add to the BadWords Do you get lots from the same e mai
62. l The message you sent to me has been queued for delivery but has not been delivered because Spam Sleuth did not recognize your From address If you would perform the following simple action your message will be delivered to my InBox and your From address will be added to Spam Sleuth so that any further e mails from you will go straight to my InBox for my prompt attention Go to HCE www spamsleuth com t t htm1 T ASamp1eAYmx1Z7XNxdWlycmVsLm CA aa At that site you will be asked to type a few letters The e mail you sent earlier will then be automatically delivered to my InBox You won t need to send your message again 3 1 19 3 Advanced The Turing Analyzer gets e mail messages that release the e mail messages when senders pass the Turing Test These messages are deleted unless you change this setting TURING INI Settings RemoveTuringNotifications 1 Default is 1 Set to 0 to keep those messages The Turing Analyzer sends e mail requests which may bounce if the e mail address has been faked or is no longer valid The Turing Analyzer can absorb those bounces so that you don t see them To turn off this feature set the value to O RemoveTuringRequestBounces 1 Default is 1 Set to 0 to keep the bounces 3 1 20 EMail Stamps Have you ever said If had a nickel for every spam get Well now its possible Just turn on EMail Stamps and spammers will get a request for a nickel If they pay the nickel you keep the nickel and the e ma
63. l also warrants that the media containing the Software if provided by Blue Squirrel is free from defects in material and workmanship and will so remain for thirty 30 days from the date you acquired the Software Blue Squirrel s sole liability for any breach of this warranty shall be in Blue Squirrel s sole discretion 1 to replace your defective media or ii to advise you how to achieve substantially the same functionality with the Software as described in the Documentation through a procedure different from that set forth in the Documentation or iii if the above remedies are impracticable to refund the license fee you paid for the Software Repaired corrected or replaced Software and Documentation shall be covered by this limited warranty for the period remaining under the warranty that covered the original Software or if longer for thirty 30 days after the date a of shipment to you of the repaired or replaced Software or b Blue Squirrel advised you how to operate the Software so as to achieve the functionality described in the Documentation Only if you inform Blue Squirrel of your problem with the Software during the applicable warranty period and provide evidence of the date you purchased a license to the Software will Blue Squirrel be obligated to honor this warranty Blue Squirrel will use reasonable commercial efforts to repair replace advise or refund pursuant to the foregoing warranty within 30 days of being so notified
64. l or domain gt Add the e mail or domain to Spammers Do they use lots of HTML gt Increase the points for HTML formatting Do they use loud HTML reds yellows large fonts gt Increase the max points or sensitivity in 2004 Blue Squirrel Advanced Features 51 9 1 5 2 5 3 HTML Volume e Did one of the analyzers find something gt Increase the points for that if it won t knock out your good e mail e Are profane e mails getting through gt Increase the points for Profanity Customer Support This User s Manual focuses on your specific needs supplying most of what you need to know to be productive with Spam Sleuth Below we have listed several options to choose from to assist you with any help you may need using Spam Sleuth Additional information about Spam Sleuth can be found in the README file Spam Sleuth Help File To access the Spam Sleuth help file click Help gt Help Topics We encourage you to use the Spam Sleuth help because it s a complete informative reference system In addition Help offers several advantages over the printed manual In the Help Index you can type in a keyword and the program automatically looks it up for you While reading the Help file you can click on a hot phrase to jump to a related topic And later you can retrace your steps flipping backwards through the topics you jumped from Or you can read topics in order like turning the pages o
65. lete Check Attachments 50 points per profanity default 50 Subject F View profanity in report default off If you don t like this program choosing which words are j profane simply turn off the Profanity Analyzer and add your HTML Volume own words to the BadWords list If you don t want profanity in your InBox set the points HIR higher than your Spam Threshold Charsets Cancel Hep The profanity analyzer looks for the really profane words We chose not to let you see the list of profanities If you want to know whether one is in there you can type it in and hit the Check button It will tell you if it is in the list The data file is encoded so don t bother looking in there either You can add profanities to the list and you can delete them from the list if you know what they are If you want to see the profanity in the Sleuth s report just check View profanity in report If you leave it unchecked you will just see 10 Profanity The number of dashes represent the number of characters in the profanity The rest is left to your imagination When you set the points you are setting the points for all the profanities If you are using Spam Sleuth to protect children you may wish to set this number very high to make sure profane e mails are relegated to the Mail Jail 3 1 9 Attachments Did you know that all e mail viruses are spread by sending attachments that can be executed The Attachments Analyzer removes da
66. lly get off the spammers lists Well the only way they ll take you off their lists is if you don t exist The Bouncer Analyzer can do just that Or at least make the spammers think you don t exist When the spammers send an e mail to a non existent account they get a non deliverable e mail back from the last e mail server in the chain The Bouncer Analyzer can fake that non deliverable e mail and send it back to the spammers making them think you have dropped off the planet They take you off their list and everybody wins except the spammer If you want to make sure you get important messages we recommend that you turn on Turing 2004 Blue Squirrel Configuration 39 instead x rx o T Active Bounce spam e mail NAY Bayesian Simulates an e mail delivery failure which le causes most spammers to remove your e mail 750 address from their list Turing Bounce if score exceeds Spam threshold 190 Bounce if score exceeds Trash threshold 10200 Bounce if score exceeds 400 FN Play Bounce Sound EM ail Stamps M Show Confirmation Dialog Right click bounce only Notify Bounce with my SMTP server only default gt Miscellaneous bay Cancel Help The Bouncer Analyzer is not active by default The Bouncer Analyzer will look at the Total Score for the message and if it exceeds the specified threshold it will simulate an e mail bounce An e mail boun
67. lue Squirrel Configuration 47 messages will be indexed as they come in This is useful if you use the Filter feature often and would like to keep the index current Standard Search xi Ent eeGyehoo com ft CO Turn Filter Off z Cancel z Advanced Ha Clear Al Date Range Help From 1 21 2004 Le To Today C 142172004 If you want more control over the searching you can use the Advanced Filter which gives you more control but you need to use the syntax of the search language See Appendix B for more information on the Advanced Filter Syntax Advanced Search E xj Query ISERE NN Tum Filter On Date Range Turn Filter Off All Messages aan C Only Messages in this date range Standard From 1 21 2004 v Help di To Today C 1 21 2004 3 2 4 3 View 3 2 4 3 1 Toolbar Turns on off the toolbar 2004 Blue Squirrel 48 Spam Sleuth User s Guide 3 2 4 3 2 Status Bar Turns on off the status bar at the bottom 3 2 4 3 3 Columns Turns on off columns in the Mail Jail 3 2 4 3 4 Display Icon Graphical indication of the type of message Status Shows an icon for actions taken on the message See the Legend Score Total spam score as assigned by the Analyzers for the message Account The account to which the e mail was delivered To The e mail address to which the e mail was add
68. luesquirrel com support Customer Service You re more than welcome to contact us via telephone If you would like to speak with a Blue Squirrel representative regarding non technical issues please select from the following options Phone 801 352 1551 Toll Free 800 403 0925 Fax 801 912 6032 E mail sales bluesquirrel com Note Hours are Monday through Friday 8 00 a m to 5 00 p m Mountain Standard Time Mailing address Blue Squirrel 686 E 8400 South Sandy UT 84070 Reference Glossary APOP Authenticated POP a way of sending the password to the incoming e mail server in an encrypted way so that it cannot be retrieved by network sniffers Only some POP3 servers support this feature You can test it with the POP3 Test button ASMTP Authenticated Simple Mail Transfer Protocol A specification for sending user and password information to an SMTP server See SMTP The original SMTP did not allow for authentication Blacklists Blacklists keep track of the IP addresses of known spam servers and open relay machines that can assist spammers Spam Sleuth can check with these servers to determine whether an e mail was sent from a known spam server Charsets E mail programs can specify a non standard character set which is usually used for Chinese and Korean e mails E mails that use other character sets can show additional characters Spam Sleuth allows you to add points for these characters and also for e mails that
69. me An equivalence class is a set of characters that collate the same a primary equivalence class is a set of characters whose primary sort key are all the same for example strings are typically collated by character then by accent and then by case the primary sort key then relates to the character the secondary to the accentation and the tertiary to the case If there is no equivalence class corresponding to tagname then tagname is exactly the same as tagname To include a literal in a set declaration then make it the first character after the opening or the endpoint of a range or a collating element Line anchors An anchor is something that matches the null string at the start or end of a line matches the null string at the start of a line matches the null string at the end of a line Back references A back reference is a reference to a previous sub expression that has already been matched the reference is to what the sub expression matched not to the expression itself A back reference consists of the escape character followed by a digit 1 to 9 1 refers to the first sub expression 2 to the second etc For example the expression 1 matches any string that is repeated about its mid point for example abcabc or xyzxyz A back reference to a sub expression that did not participate in any match matches the null string NB this is different to some other regular expression match
70. nd removes them from the Mail Jail Deleting messages moves them to your Recycle Bin so they can be recovered until you empty your Trash If you don t want messages moved to the Recycle Bin hold down SHIFT when you delete 3 2 4 2 2 Delete All Deletes all the messages from the Mail Jail after confirmation Deleting messages moves them to your Recycle Bin so they can be recovered until you empty your Trash If you don t want messages moved to the Recycle Bin hold down SHIFT when you delete 3 2 4 2 3 Mark as Good UnSpam Delivers the message to your InBox Sends the e mail back to your e mail program The message is re mailed to your internal server 3 2 4 2 4 Mark as Spam Marks the message as spam and turns the icon red This is important for the Bayesian Analyzer for proper training 3 2 4 2 5 Select All Selects all the messages in the Mail Jail 3 2 4 2 6 Refresh Reloads the list of spam from the server In most cases this is automatic 3 2 4 2 7 Filter This menu option turns the filter on or off The filter indexes your messages and lets you find a message that Spam Sleuth might have missed or that you were expecting Each time you use the filter the program will index the messages that have not yet been indexed If the index it too out of date the entire set of messages will be re indexed Tip If you leave the filter on and the Find fields are blank you will see all of your messages but the 2004 B
71. ngerous attachments such as exe files Don t worry it stores the entire e mail along with the attachment in the Mail Jail if you need it back Be very careful Most e mail viruses are accidentally sent by friends or associates that have you in their e mail address book The virus spreads itself by sending an e mail to everyone in the address book If you get e mails with JPG attachments that are often spam you can assign 50 points by just adding the line JPG 50 to the top box in the Attachments Analyzer 2004 Blue Squirrel Configuration 19 TU x es M Active List file types that should get spam points A and or should be removed from the e mail Profanity L W The attachment will be stored in your spam list but removed from your InBox e mail Add Points for these file types BAT 500 COM 500 EXE 500 Subject GIF 20 ng JPG 20 i HTML Volume TA E HR Charsets Blacklists A Cancel Help The Attachments analyzer has the ability to assign points and it also has the ability to remove the attachment Attachments are dangerous when they are programs that can do anything to your computer Executable files EXE VBS CMD and others attached to e mails are very often viruses By default Spam Sleuth is configured to remove executable files You can always get the original file back with attachment by going to the Mail Jail and hitting UnSpam Be careful often times an executa
72. nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nannan nnmnnn nanana 4 2 Configure Yo r ACCo UNt s sirena nene aaaeeeaa aaa ea aaa eaaa aa aapea aa aaaea 5 Part Il Spam Detection Basics 6 How Spam Sleuth Eliminates Spam ss ssnnssnnneneeneesssnnneeneeennnns 7 2 Techniques for Eliminating Spam rrrmrmrennnrrrrrrerrrrerrerrerereerennnnns 7 Points System easstsdecedsdddececedddevacesececciedcsocascsccveoceiciuavsecssavacedecasssedesseedalecrsoadisiustsacssavedeicaesaivdeducesasetrsecesstesescussssadrieedas 8 Spam Management sisicicisscrsaeraccacivasicnssataiesdivadesacieaceansteasecaavattacndeenverndveadsvutvendeceviendesdsubtecndeardiradvendeshtaensoctaderdenbasabianseans 9 Spam Report id es GANAN NAA 9 Part Ill Configuration 10 1 Configuration of Analyzers 1 000uuuuuuuuuuuuUNNNNNNNNNNNNNNNNNNNNSNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNKNNNKKAAAAAN 10 Score NANANA ck NAG EREBNANARA 11 Friends aga aag nn NG de ste Ori agad NG DING NG aani Da Ga BN NG NG a entame NGA apa NG GN GN EP SEP 12 Mailing Lists anG NIANG AARIIN AAANG 13 Spammers To GoodWords BadWords Profanity Attachments Dictionary Subject HIML Volume aNG SL LE NGALANG 22 Gharsets aNG ANAL LA se raser 23 Blacklists Han nie AA NANA ANA NIAN ANA 24 HTMLIReMOVAL aa RAANG NAAN tt ane ne een A 25 Valid Sender Power Filter Bayesian How Bayesian Analysis WOrkS i icc secsesccvsssoccceedsnessevccvsscevetsedsnessanccusssescduedsbessavccusssovedued shessesccustsesca
73. ny number of characters Adding mycompany com will let e mail messages from joe shmoe mycompany com and jane doe mycompany com right through to your e mail program x IV Active The e mail addresses and names that you add here will override the spam score Add your friends business associates and known mailing lists to which you subscribe COMMUNICATIONS COMMUNICATIONS MSN COT a CRAIG PYLE FRANKLINCOVEY COM CTYLER COASTALENVIRONMENTAL COM CURTIS_NELSON PHAST COM DAVE W ACCESSONE COM Bi DAVEW BLARG COM Ei MailingLists DAVEW GATE WAY PALWEST COM DAVEW PALWEST COM s DAVIDGON MICROSOFT COM aiid DAVIDLEB MICROSOFT COM P DCHRISTENSON SCULPTURED COM m DEENF BLUESQUIRREL COM To DEMCNEILL MSN COM 27 Goodw ords Import Gi E The Friends dialog lets you add e mail addresses for your family friends co workers and mailing lists If someone in this list sends you an e mail Spam Sleuth will route the message directly to your e mail program Spam Sleuth will still strip off dangerous attachments but you will get the e mail 2004 Blue Squirrel Configuration 13 Add as many e mail addresses as you d like E mails are not case sensitive so don t worry if the letters are all capitalized Friends supports limited wildcards You can put a at the beginning or end of a word Example BLUESQUIRREL COM would allow all Blue Squirrel addresses that end in BLUESQUI
74. o space Nd Equivalent to digit D Equivalent to digit l Equivalent to lower L Equivalent to A lower u Equivalent to upper U Equivalent to upper i C Any single character equivalent to X Match any Unicode combining character sequence for example a x 0301 a letter a with an acute Q The begin quote operator everything that follows is treated as a literal character until a E end quote operator is found YE The end quote operator terminates a sequence begun with Q What gets matched The regular expression library will match the first possible matching string Regular Expression documentation was modified by Blue Squirrel with permission The following message applies to the regular expression matching library Permission to use copy modify distribute and sell this software and its documentation for any purpose is hereby granted without fee provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation Dr John Maddock makes no representations about the suitability of this software for any purpose It is provided as is without express or implied warranty Copyright Dr John Maddock 1998 2000 all rights reserved 2004 Blue Squirrel Reference 59 6 3 Appendix B Advanced Filter Syntax If you are using the Basic Filter you don t need to use t
75. o a sub expression and to mark what generated the match For example the expression ab would match all of the string ababab Non Marking Parenthesis Sometimes you need to group sub expressions with parenthesis but don t want the parenthesis to spit out another marked sub expression in this case a non marking parenthesis expression can be used For example the following expression creates no sub expressions abc Forward Lookahead Asserts There are two forms of these one for positive forward lookahead asserts and one for negative lookahead asserts zabc matches zero characters only if they are followed by the expression abc abc matches zero characters only if they are not followed by the expression abc Alternatives Alternatives occur when the expression can match either one sub expression or another each alternative is separated by a I Each alternative is the largest possible previous sub expression this is the opposite behavior from repetition operators Examples 2004 Blue Squirrel Reference 55 a blc could match ab or ac abcldef could match abc or def Sets A set is a set of characters that can match any single character that is a member of the set Sets are delimited by and and can contain literals character ranges character classes collating elements and equivalence classes Set declarations that start with contain the compliment of the
76. o be included depending upon the locale xdigit Any hexadecimal digit character 0 9 a f and A F word Any word character all alphanumeric characters plus the underscore unicode Any character whose code is greater than 255 this applies to the wide character traits classes only 2004 Blue Squirrel 56 Spam Sleuth User s Guide There are some shortcuts that can be used in place of the character classes w in place of word s in place of space d in place of digit Nin place of lower u in place of upper Collating elements take the general form tagname inside a set declaration where tagname is either a single character or a name of a collating element for example a is equivalent to a and comma is equivalent to The library supports all the standard POSIX collating element names and in addition the following digraphs ae ch II ss nj dz IJ each in lower upper and title case variations Multi character collating elements can result in the set matching more than one character for example ae would match two characters but note that ae would only match one character Equivalence classes take the general form tagname inside a set declaration where tagname is either a single character or a name of a collating element and matches any character that is a member of the same primary equivalence class as the collating element tagna
77. onsider removing links There are two kinds of images that can appear in an e mail There are embedded internal images which use up your computer connection when the e mail is sent and the more dangerous kind external images The external images are stored on a web server When the e mail is viewed you computer goes and gets the external images Often times it also sends information to the spammer that you looked at the e mail This increases the chances of you getting more spam from that spammer in the future If you choose to Remove images External in the HTML Removal Analyzer you will not see the pretty pictures in your spam or in your valid newsletters If you don t want spammers to know that you ve read your e mail you may need to take out Web Bugs External References and Read Receipt Requested header tags out of your e mail The HTML Removal Analyzer handles all of these 2004 Blue Squirrel 26 Spam Sleuth User s Guide x E JV Active Removes HTML and lets you assign spam points to certain types of HTML en Set points to to remove from spam analysis KA Check Remove from e mail to have the program modify the HR ar message before it goes to your InBox The original Charsets untouched message will be stored in the spam viewer E M NotFriends Points Remove from e mail Script 50 Default 50 Blacklists ni Paa HTML Formatting fi 0 Default 10 p Links 10 Default 10 HTML Rem
78. oval Fake Links 100 Default 100 me External images 60 Default 60 Valid Sender Internal images 60 Default 60 s5 External Refs 60 Default 60 Web Bugs 100 Default 100 bp yg Read Receipts fi 0 Default 10 Cancel Help E a a BN a a i The HTML Removal Analyzer is one of the most unique features in Spam Sleuth This analyzer can add points for certain types of HTML but more impressive is its ability to remove certain types of HTML Script Java Script and other scripting languages are programming languages and have been known to have some security holes Since many of the e mail clients are using the browser or browser component to read the e mail your computer may be put at risk just by reading an e mail Turning on Remove Script can remove the script program from the e mail Sometimes this means an ad doesn t fly but sometimes it means that a dangerous script virus has been thwarted HTML Formatting HTML formatting in a message can be a good thing but most of the time it is just used by the advertisers trying to get your attention The meaning of the message is in the text and conveying it in a big bright purple font isn t usually necessary Links Most of the time links in a message are just fine If you are using Spam Sleuth to protect kids you may want to remove links that kids might click on and take them an unsavory web site For most people we recommend leaving this unchecked and keep the links
79. port in the Mail Jail This feature comes in handy because sometimes real messages are indeed spam and you can view the Score and Store report to better configure Spam Sleuth so that you don t receive messages from that Spammer again You can right click and Add to Spammers to keep messages with the same From address from making it into your InBox For more information about the Score and Store report see the Interface section Spam Sleuth is very customizable It has been tuned to work right out of the box You will be able to get better performance by configuring the program for the type of e mail that you receive Spam Sleuth displays color coded dots next to the messages in the Mail Jail e Red indicates the e mail is spam e Yellow indicates the e mail is not spam but has been modified For example you may have received an HTML e mail and Spam Sleuth stripped out all of the HTML and routed a text version of the message to your inbox e Green indicates that the total amount of points the e mail received from the Analyzers scored less than the spam threshold For information about the threshold settings and analyzers see the Defeating Spam section in this manual e Green on Yellow indicates that the message is still on the server This has different meanings depending on the mode the account is in Logging Spam Sleuth has the ability to log information which can be helpful in identifying configuration problems Open Spam Sl
80. pt Any time the original message is modified a copy of the original is stored If you want the original untouched message just click on message and hit Mark as Good UnSpam There is a green dot next to messages that were not spam You will not see any green dots unless you turn on the Score and Store non spam messages in the Misc section of configure The Spam Score column shows you how many points the e mail received Be aware that it may not be the total score because there is a Stop Score that lets Spam Sleuth stop analyzing a message If you always want a full report set the Stop Score to 0 in the Score configuration Sort the columns by clicking on a column header Click it again to sort either ascending or descending Each e mail account gets its own spam storage Choose which account to view with the drop down box of accounts in the upper right hand corner You can right click on an e mail message and choose from the available options Deletes the highlighted message s Displays the current message and spam report Mark as Good UnSpam Sends the message back to your e mail program Mark as Spam sets to a spam message and keeps it from being delivered to your InBox Displays the Program help Turns the Filter on and off Displays the legend for the color coded dots that appear next to the messages Automatically opens your Web browser and launches the Blue Squirrel home page Launches the
81. r boss etc Use the Relay Analyzer to automatically forward the best e mail x a A p vm IV Active Relay an E Mail message Turing ES Sends the E Mail message to a specified address if the conditions selected below are satisfied EMail Stamps Good Spam C Custom between fo and Relay E Mail message to f gt MyOthef account com Notify M Show Confirmation Dialog right click only get M Play Sound when Relayed Test Miscellaneous Bouncer tt Cancel Help The Relay Analyzer can relay messages based on its score Itis not on by default This is useful for sending important messages to a PDA account a pager etc You can protect your PDA e mail account by giving out your regular e mail address and then only passing along e mail that is from a known Friend Good Only relay messages that don t reach your spam threshold Spam Only relay messages that exceed your spam threshold Custom Set a custom score range Perhaps you only want to relay messages that are from Friends set the score to 20000 to 20000 Relay E mail message to Set the e mail address of a valid e mail account Show confirmation dialog right click only Check this option if you want to see a confirmation dialog when messages are relayed Play sound when Relayed Check this option if you want to play a sound when messages are relayed 2004 Blue Squirrel Configuration 41 3
82. r every non spam if you choose Score and store non spam messages To see spam for a single account or for multiple accounts in one place To select and request Turing To select and bounce messages To select and request EMail Stamps To add sender s addresses to Friends To add spammer s addresses to Spammers To rescore messages to assist in tuning To see the results of a Bayesian test for previous messages after training To see amount of spam that you receive on a daily basis To view spam reports for messages The Mail Jail lets you view your spam It lists the score who it was from an action status the date as reported by the e mail message and the subject You can double click to view a message in a safe viewer The viewer will not show pictures it will not run Java script and it will not let you launch an attachment There is a red dot next to spam messages that were analyzed and found to be spam These messages will always contain the unmodified message The report may specify that the HTML or Attachments were removed but if you Mark as Good UnSpam these messages you will get the message as originally sent 2004 Blue Squirrel Configuration 43 3 2 1 There is a yellow dot next to messages that are stored for your convenience because the original message was modified before being sent to your InBox The message might be modified to remove a dangerous attachment or potentially harmful scri
83. r of times but at least once An expression followed by may be repeated zero or one times only When it is necessary to specify the minimum and maximum number of repeats explicitly the bounds operator may be used thus a 2 is the letter a repeated exactly twice a 2 4 represents the letter a repeated between 2 and 4 times and a 2 represents the letter a repeated at least twice with no upper limit Note that there must be no white space inside the and there is no upper limit on the values of the lower and upper bounds All repeat expressions refer to the shortest possible previous sub expression a single character a character set or a sub expression grouped with for example Examples ba will match all of b ba baaa etc bat will match ba or baaaa for example but not b ba will match b or ba ba 2 4 will match baa baaa and baaaa Non greedy repeats Whenever the extended regular expression syntax is in use the default then non greedy repeats are possible by appending a after the repeat a non greedy repeat is one which will match the shortest possible string For example to match html tag pairs one could use something like lt s tagname gt gt lt s tagname s gt In this case 1 will contain the text between the tag pairs and will be the shortest possible matching string Parenthesis Parentheses serve two purposes to group items together int
84. ressed not always the same as the account From The e mail address of the sender as reported by the e mail message which can be faked Analyze Date The date and time that the message was analyzed by Spam Sleuth Email Date The date and time the message was sent as reported by the e mail can be faked Size The size of the message including unencoded attachments Subject The subject of the message as extracted from the e mail message Hides or shows the messages of certain types Still on Server Messages that are still on the server This means different things depending on the mode Good Messages that fell below the spam score when analyzed Modified Messages that were modified by analyzers like HTML Removal Attachments which can modify the message to make is safer Spam Messages that exceeded the spam score when analyzed 3 2 4 3 5 View Message Views the selected message in a safe viewer 3 2 4 3 6 Legend Displays the legend for the icons 3 2 4 4 Help 3 2 4 4 1 Help Topics Opens the help for the program 3 2 4 4 2 About Shows version number and information about the program 2004 Blue Squirrel Advanced Features 49 4 1 4 2 Advanced Features Score and Store If you turn on the Score and store non spam in the Miscellaneous section of Configure Spam Sleuth will keep a record of all the green dotted messages received and you can view the score and store re
85. rts limited wildcards You can put a at the beginning or end of a word Example BLASTMAIL COM would block all e mail addresses that end in BLASTMAIL COM To block e mails that use various subdomains like out mailout blastmail com or out outgoing blastmail com etc then you can add BLASTMAIL COM to the Spammers list to catch all of them 3 1 5 To What if you want to make sure that the sender really knows who you are Use the To Analyzer to filter out e mail that is sent to Homeowner Resident or Potential Customer Just list all of your real e mail addresses Sometimes you have aliases add em to the To Analyzer list For example if you have multiple e mail addresses such as bob_jones mycompany com and support mycompany com that you receive e mail from then add them to the list Have you ever gotten an e mail with a truck load of e mail addresses listed in the To section Sometimes these are jokes that people are sending to everyone on their address list Unfortunately most of the time you are just one of the millions that have been spammed The To Analyzer will count up how many people got the same message If there are too many then Spam Sleuth will assign some points You can decide how many people is too many and you can decide how many 2004 Blue Squirrel Configuration 15 points to assign to the message x a Spammers g Add your e mail address name and any other alias e mail address
86. s You may wish to turn this off this analyzer if your primary language is not English Use Master Dictionary Use the Master dictionary You should leave this checked unless you are in a non English speaking country Use User Dictionary Also checks for words in the user s custom dictionary Use this to add words that are not in the Master Dictionary Edit lets you create edit a personalized dictionary file If you expect e mails to have certain words at the end you should add those words to your own personal User Dictionary Fake words at the end of subject By default the last three words of a subject are analyzed and 50 points per non word is added to the total score Fake words at the end of message By default the last two words of the message are analyzed and 10 points per non word is added to the total score Include Detail in Spam Report Selecting this option will add additional lines to the spam report that show you which words were analyzed and whether or not they were in the dictionary Use Defaults Sets Dictionary settings to the defaults 2004 Blue Squirrel Configuration 21 3 1 11 Subject Can you identify spam with a single glance at the e mail s subject The Subject Analyzer looks at the spacing capitalization and looks for the legally required but rarely used ADV Advertisement to determine whether a message is spam Spammers also use tricks so that it is more difficult
87. s provided any copy must contain all of the original Software s proprietary notices e orif you have purchased licenses for a 10 pack or a 50 pack make up to 10 or 50 copies respectively of the Software but not the Documentation provided any copy must contain all of the original Software s proprietary notices The number of copies is the total number of copies that may be made for all platforms Additional copies of Documentation may be purchased You may not e permit other individuals to use the Software except under the terms listed above e permit concurrent use of the Software e modify translate reverse engineer decompile disassemble except to the extent applicable laws specifically prohibit such restriction or create derivative works based on the Software copy the Software other than as specified above e rent lease grant a security interest in or otherwise transfer rights to the Software or remove any proprietary notices or labels on the software LIMITED WARRANTY Blue Squirrel warrants that for a period of thirty 30 days from the date of acquisition the Software if operated as directed will substantially achieve the functionality described in the Documentation Blue Squirrel does not warrant however that your use of the Software will be uninterrupted or that the operation of the Software will be error free or secure In addition you must determine that the Software sufficiently meets your requirements Blue Squirre
88. shold settings that you can adjust to your liking To configure the threshold settings right click on the Spam Sleuth icon in your Windows System tray gt Configure gt Score tab x Set your Spam tolerance You may need to E j adjust these numbers if you turn on additional analyzers or change points for an analyzer Increase the Spam Score to allow more e mail through Decrease to catch more spam but possibly catch some desirable e mail Spam Thresholds E mail is spam if score exceeds fi 90 Stop analyzing if score exceeds 5000 Permanent trash if score exceeds fi 0200 Active Directory m Spam Management Delete spam after 30 days Never automatically delete spam Friends M5TR C Don t save spam pil m ists MSTR M Ask for confirmation when manually deleting spam v F Mailing D Cancel Help e E mail is spam if score exceeds If the total amount of points accumulated by all of the analyzers exceeds this number then Spam Sleuth classifies the e mail as spam and 2004 Blue Squirrel Spam Detection Basics 9 the e mail is sent to the Mail Jail If you want to see the contents in the Mail Jail simply double click on the Spam Sleuth icon If you don t want to ever see the messages just wait 30 days and they will be deleted If the total amount of points is less than this number then this number the e mail is classified as a real gem and Spam
89. sometimes get e mail that looks like junk but it really is a good e mail because it is about something you care about Maybe you care about basketball or basket weaving Everyone has his or her own hobbies and interests If you put those words in the GoodWords Analyzer it will deduct points when it finds your interests If you want to see all e mails about racing you may want to add FINISH LINE 1000 RACING 1000 and RACE 1000 remember the acts like any number of characters Adding these to the GoodWords Analyzer will deduct 1000 points when it finds these 2004 Blue Squirrel 16 Spam Sleuth User s Guide words Don t forget to add words that pertain to your job x M Active Add words that you want in an e mail Words maa listed here will DECREASE the Spam score cooa and increase the likelihood that you will get a Boe the e mail in your InBox BLUE SQUIRREL 100 BLUEPASTE 1000 WEBWHACKER 100 oie Cancel Help GoodWords let you catch e mails that may interest you At Blue Squirrel we have a number of products If our product names are in the e mail we probably want the e mail even if it has some spam characteristics The GoodWords will be different for everybody You might put in sports or hobbies that interest you so that you don t miss a good e mail You put in the number of points to SUBTRACT from the Spam Score A high number will ensure that you get e mails about that subject
90. terms and conditions governing its use by licensee It is against the law to copy the software except as specifically allowed in the license agreement No part of this document may be reproduced or transmitted in any form or by any means including without limitation graphic electronic photocopy facsimile taping or mechanical reproduction of any kind without the prior written approval of Blue Squirrel Use of this product is subject to the terms of the accompanying License Agreement as stated in the back of this book U S Government Restricted Rights Legend The Software and documentation are provided with RESTRICTED RIGHTS Use duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph c 1 of the Rights in Technical Data and Computer Software clause at DFARS 52 277 7013 or in subparagraph c 1 ii and 20 of Commercial Computer Software Restricted Rights at 48 CFR 52 227 19 as applicable Contractor manufacturer is Blue Squirrel Software 686 E 8400 South Sandy UT 84070 Special thanks to All the people that contributed to the development of Spam Sleuth including the developers copywriters web site developers technical support customer service manual editors alpha testers the hundreds of beta testers Contents l Table of Contents Foreword 0 Part Introduction and Getting Started 4 1 Starting Spam Sleuth aasannssssnnnnnnnnnnnnnnnnnnnnnnnnnnn
91. tly deep sea diving scuba cookies and cream sweets Mother Theresa India 20 Notice that phrases within phrases require parentheses Parentheses Parentheses may be used to specify the order in which you want the expression to be evaluated In the following example we want the AND 8 to be evaluated before the OR fast amp cars racing In the next example we want the OR to be evaluated before the AND 8 Indy 500 amp fast cars 6 4 License Agreement THE Blue Squirrel END USER LICENSE AGREEMENT REDISTRIBUTION NOT PERMITTED GRANT BY INSTALLING Blue Squirrel SOFTW ARE YOU ARE CONSENTING TO BE BOUND BY THIS AGREEMENT IF YOU DO NOT AGREE TO ALL OF THE TERMS OF THIS AGREEMENT DO NOT INSTALL THE Blue Squirrel SOFTWARE OR IF YOU HAVE ALREADY INSTALLED IT UNINSTALL IT IMMEDIATELY Subject to payment of applicable license fees Blue Squirrel grants you a non exclusive license to use the Software and accompanying documentation Documentation in the manner described below under Scope of Grant SCOPE OF GRANT You may e use the Software on any single computer e use the Software on a network provided that each person accessing the Software through the network must have a copy licensed to that person 2004 Blue Squirrel Reference 61 use the Software on a second computer so long as only one copy is used at a time e copy the Software for archival purpose
92. uedsbesseuccvecsevetued ihe 31 Wal ER anaes Ana eu NANANA aie 32 View Statistics Ama AE ANA NA ANA NA PANA NAAN ADAN 33 Advanced Turing Turing Test Sample Turing ME5Sa9 p s ngana NGNEEAIAE NEEDED NENENG 36 Advanced apa Naa ANNA NAAN ANA ite dian ANN Na 36 EMail Stamps sciserscvsasssnetsnsaceadeasesaarsieusnacctveracceadestesencasnadeasesaarnbtasnederveracveadeshesendamtadraiesaacabiusnsdantaruorendesuedendesnadeutetbons 36 Sample EMail Stamp ROQUCSE vcssccsccccessevscestescetscsatecevssesscescesssostcsavscesscestesssvatacessseviceivsteottesevscesitevessscaatactessevecaerss 38 Bounger ANA AA kaadaa Paasa ra ded daa as aea maba ua daa Ti teens atvsealen 38 Relay aNG ANDONG DAANAN ANGARA 40 Auto Respondern maan aa NAAANINAG AA AIAI 41 ALAN AA AA AA AA AA 42 2004 Blue Squirrel Spam Sleuth User s Guide Part IV Part V DA Oa BR WD Part VI 1 2 3 4 Dragand DD EEE een ARE ER ER 43 Legend for Spam Message Types sssscesssesseeenesseseeeenessesseeseesesenesnesaeseeesnesaeseeeseesaeseeesnesaesenennenaesonesnenaesoneenenesanes 44 Right Click Men ec iiseiciiteicicstiscciatevenscctasesedeceracvicceccrsdriessadiacrscdecctustievecesasriedeccrsirsesecadairscidactustdevscasauriecseaisirieuecddaindeueosts 45 Menu GRRR AG 45 AN 45 Configure RER BEBANG EBE RE 45 Export Nanana na naa BING KIND DINI GRAD Sara AAEN EAER S 46 AP tre KARGA PAKA O PA PITA AND PA AA RAD TEE PP TAREE TUON 46 Edat T
93. ve you from their list If they aren t a reputable company which many aren t you will be flagged as a live prospect and your name will probably be sold to other spammers By replying you let them know that there is a real person at an active e mail account You may not be able to e mail them back for a number of reasons The Valid Ssender Analyzer looks for these reasons and increases the spam points if the e mail fails the tests If the From address is not the same as the Reply To address it may indicate deception and some points will be added The addresses not matching often occurs when a company hires a spam company The Reply To goes back to the spam company so they can handle the backlash The Valid Ssender Analyzer also looks for an empty 2004 Blue Squirrel 28 Spam Sleuth User s Guide From address If there isn t anybody to whom you can send a reply it isn t likely that the e mail is good The final steps are to verify that there is an IP address to which a reply could be sent If that works then a quick test lets the Valid Ssender Analyzer know whether there is a real computer receiving e mail on the other end x Iv Active MX looks up IP for reply e mail server a Checks for valid IP range HTML Removal pa SMTP test will check if an active SMTP WA x server exists at the IP Valid Sender Points aa M From Reply To 25 Default 25 v Default 100 Power Filter J No From Address fi 00 e
94. verybody who sends to that e mail Some are built by taking a weighted average based on how many people send them copies of the same spam message from the same server Each list that you check will take 3 to 5 seconds to check if the e mail is not from a spammer negative response It takes about second to check if the e mail is from a known spammer positive response You can edit the number of points assigned when a blacklist reports that the IP is a known spammer 3 1 15 HTML Removal Are HTML e mail messages dangerous guess it depends on how you define dangerous HTML e mail can run scripts redirect to other web pages which may be pornographic and even send information back to the sender that says you looked at the e mail The HTML Removal Analyzer is one of the more unique features of Spam Sleuth It can selectively remove dangerous HTML from your e mails By removing script you don t have to worry about being redirected to another web page By default Spam Sleuth will remove HTML script You may lose some flying logos but your computer will be safer Some folks would prefer to get just the text without the colors fonts backgrounds etc If you just like the plain text without the frilly icing then let the HTML Removal Analyzer take out the extraneous text formatting The HTML Removal Analyzer can also remove links Links are usually pretty safe because you have to click on them to go to a web page For kids however you might c
95. yet keep all of your settings You can add your own BadWords and the automatic update can update the master list of BadWords also If you remove one of the words we consider a spam indicator our updated list will not put it back Feel free to tailor Spam Sleuth to your needs and allow updates which keep spam in check If an e mail from a friend or business associate is mistaken for spam just go to the Mail Jail right click and say Add to Friends so that you ll always get their messages in the future and then hit UnSpam to get the message back to your InBox More helpful hints for eliminating spam e Don t reply to spam messages then they know you look at your junk e mail just add them to Spammers so you don t see their messages e Assume that many of the free Internet giveaways are to get your e mail address Decide if it is worth it e Don t buy anything from spammers just live without the Flat Hoses Viagra 550 University Diplomas and becoming a millionaire this month How Spam Sleuth Eliminates Spam Spam Sleuth Enterprise acts as an e mail server to the outside world When an e mail comes in the message is analyzed with the Analyzers and a report is created for the e mail If the e mail exceeds the user s spam threshold it is compressed and stored instead of being passed along to the organization s internal e mail server Techniques for Eliminating Spam Fighting spam is a little bit like fighting computer viruses It

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