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Educational Network Center of Tainan City Anti-SPAM Report

Educational Network Center of Tainan City Anti-SPAM Report. Kuo-Kuang Chu. Configuration in TN Mail. account. Mail.tn.edu.tw: P4 3.2G, 1GB ram, 40+150+150GB DSK CPU idle 90%-99%, used swap 4096k Ms(1|2).tn.edu.tw: P4-2.8G*2, 1GB ram, 36G DSK CPU idle 85%-99%, used swap 0k. 10025.

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Educational Network Center of Tainan City Anti-SPAM Report

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  1. Educational Network Center of Tainan CityAnti-SPAM Report Kuo-Kuang Chu

  2. Configuration in TN Mail account Mail.tn.edu.tw: P4 3.2G, 1GB ram, 40+150+150GB DSK CPU idle 90%-99%, used swap 4096k Ms(1|2).tn.edu.tw: P4-2.8G*2, 1GB ram, 36G DSK CPU idle 85%-99%, used swap 0k 10025 spool mail.tn.edu..tw SMTP, IMAP, POP3, webmail MX record for filter ? 10024 messages ms1.tn.edu..tw 25 Client or Other SMTP servers ms2.tn.edu..tw A record for SMTP ? MX record for SMTP? Mail Exchanger Remote Filter DNS

  3. TN Mail Anti-SPAM Process Spam alertSpam-level:6-15 5% Passed All Messages 27% 25% Graylist ClamAV Spam-Assassin 17% Passed 3% 2% 73% Not-deliveredSpam-level>16 Virus Rejected

  4. Day Report in TN Mail http://ms1.tn.edu.tw/amavis.day.html http://ms2.tn.edu.tw/amavis.day.html The load is evenly distributed between ms1 and ms2 Date Range: 2004/11/01 00:00:00 - 2004/12/01 00:00:00

  5. TN Mail Filter Statistics Date Range: 2004/11/01 00:00:00 - 2004/12/01 00:00:00

  6. Passed & Not-delivered Messages Add SPAM alert In Subject

  7. Passed Messages • Top 5 Client Hosts • Top 5 Client Domains • Top 5 Senders • Top 5 Sender Hosts • Top 5 Sender Domains

  8. Not-delivered Messages • Top 5 client hosts of spam • Top 5 client domains of spam • Top 5 senders of spam • Top 5 sender hosts of spam • Top 5 sender domains of spam

  9. Infected Messages • Top 5 Virus • Top 5 Client Hosts • Top 5 Client Domains • Top 5 Senders • Top 5 Sender Hosts • Top 5 Sender Domains

  10. Rejected Messages • Top 5 Reject reasons • Top 5 Client Hosts • Top 5 Client Domains • Top 5 Senders • Top 5 Sender Hosts • Top 5 Sender Domains

  11. Rejected Connections • Top 5 Reject Reasons • Top 5 Client Hosts • Top 5 Client Domains • Top 5 Senders • Top 5 Sender Hosts • Top 5 Sender Domains

  12. Mail Filter Log Advanced Search

  13. Add SPAM Level in Subject

  14. SpamAssassin local.cf Sample • body MailName_ZH /姓名/ • describe MailName_ZH Body contain spammer msg in chinese • score MailName_ZH 1 • body Mail_ADDR /住址/ • describe Mail_ADDR Body contain spammer msg in chinese • score Mail_ADDR 1 • body Mail_MOBILE /手機|行動/ • describe Mail_MOBILE Body contain spammer msg in chinese • score Mail_MOBILE 1 • body Mail_EMAIL /E-Mail|EMail|電子郵件|電郵|電子信箱/ • describe Mail_EMAIL Body contain spammer msg in chinese • score Mail_EMAIL 0 • body Mail_TEL /電話/ • describe Mail_TEL Body contain spammer msg in chinese • score Mail_TEL 0 • body Mail_SEND /郵寄/ • describe Mail_SEND Body contain spammer msg in chinese • score Mail_SEND 0 • meta Mail_ZH MailName_ZH && Mail_ADDR && (Mail_MOBILE || Mail_TEL ||Mail_EMAIL || Mail_SEND) • describe Mail_ZH Body contain spammer msg in chinese • score Mail_ZH 3

  15. Meta Score in local.cf

  16. Reconfigure local.cf • Parse local.cf • spamassassin --lint local.cf • Restart amavisd • /usr/local/sbin/amavisd stop • /usr/local/sbin/amavisd start

  17. TN Mail Management System

  18. School Personnel Approved

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