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Contents
1. e mail Filter 1 Introduction In this project our e mail filter gets user s mail through pop3 protocol it uses a special technology to check the spam mail it checks the mail with four functions 2 Backgrounds Spam is illegal and is not democratic the message of the spam mail almost is not real User may receive large amount of messages each day just press the delete key to delete the junk mail is not the best method So use the spam mail filter to solve the problem is one of the methods 2 1 What s wrong with spam Spam message waste the internet s two most precious resources The bandwidth of long distance communications links The time of network administrators who keep the internet working from day to day 2 2 Why spam mail work E mail is easy to use If you have a computer and internet connection you can send an e mail you don t have to worry about buying envelopes or stamps You just have to have an e mail address for somebody The low cost of spam In the world of junk e mail marketing it costs no more to send the first e mail than it does to send the ten million e mails e mail Filter 3 System analysis gt filtering flow e mail Filter 4 Install guide 5 Main function Function 1 Black List when the mail came the program will compare the e mail address of sender with the black list f the e mail address match one of the address in the black2. ezusrregutsre _ 7 Subject Presentation Motivation please input your name C Subject no subject pO205302 _ Subject English Salon Welcome All MPI Students ease input your password _ Subject WHITE LIST Li Subject BLACK LIST OK Pre octets eceived fram smtp1 ipm edu mo smtp1 ipm edu mo 202 1 75 393 220 by stucd ipm edu mo 8 13 38 13 3 with ESMTP id j55JMWM 0015043 Thu 9 Jun 2005 03 22 57 0800 25T eceived from 57 192 95 04 rev gaoland net 57 192 96 64 rev gaoland net G4 99 192 37 by smtp ipm edu ma 8 12 1118 12 10 with SMTP id j58JMeaa021 734 Thu 9 Jun 2005 03 22 42 0800 essage Id 2005060971 922 55JMeaa021 P34smtpT ipm edu mos CC mailbox lulstpdnnmedhotnail corm sert X Identity Fey idi Date Wed 08 Jun 2005 13 12 45 0700 rom Phil Youngblood lt ulstpdnanimeg hotmail com Accept Language en us en IME Yersion 1 0 0 esa students stud ipm edu imo Subject SPAMe dont miss antent Type multipartrelated O30905030007 080004030008 x MPI Mail Check Status Virus Scan Passed MRI Spam Status spam SpamAssassin score 9 885 required 5 Be ne ee f ah a eel aeieeiaii aaa Ahh HEEDED ED EDEL RHE AREAREN ERERSESERHEERNENENEREESREHFEREENENENEHEHSESREEENENERSESENEEHENERENERERSESEEEREEEESERENE
3. list then it will turn the subject into black list automatically Function 2 White List when the mail came the program will compare the e mail address of sender with the white list if the e mail address match one of the address in the white list then it will turn the subject into white list automatically Function 3 Searching The program will check all of the word in the mail if any words match with the key word which in the database then it will turn the subject into spam Function 4 Compare the path Search the address of the host compare to the sender s e mail address if they do not match with each other then the program will turn the subject into alert e mail Filter 6 User manual Input pop3 host name user name and password then pass the ok button to connect the server After login it will show all of the mail in the pop3 server i a2 please input pop3 host L Subject ALERT _ Subject Psychology Presentation _ Subject Presentation Motivation please input your name C Subject no subject n0203382 _ Subject English Salon Welcome All MPI Students lease input your password Subject WHITE LIST FHE Subject BLACK LIST _ Subject SPAM pk Subject ALERT mailhost ipm edu mo Quit You can select one of the mails then it will show the mail below please input pops host _ Subject ALERT _ Subject Psychology Presentation mailhost2 ipm edu ima Mnalims
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