1. SpamAssassin E-Mail Filter Rodney Weakly April 26, 2006

2. SpamAssassin  Open Source Apache Project  Origins Perl script written in 1997 called filter.plx  written by Mark Jeftovic Now a Perl module  Mail::Spamassassin  Sourceforge on April 20, 2001  Cross platform install available Windows, Unix, Linux, BSD

3. Filtering  Uses a multitude of test to identify and tag spam Header tests Body phrase tests  SpamAssassinRules. SpamAssassinRules Bayesian filtering  BayesFaq BayesFaq Automatic address whitelist/blacklist  AutoWhitelist AutoWhitelist Manual address whitelist/blacklist  ManualWhitelist ManualWhitelist Collaborative spam identification databases (DCC, Pyzor, Razor2);  NetworkTests. NetworkTests DNS Blocklists, RBL;  DnsBlocklists DnsBlocklists Character sets and locales

4. Mail Transfer Agents  Intergration with mail servers flexible, well-designed, abstract API can be integrated anywhere in the email stream  On receipt  After delivery to mail box  Etc MTA’s  procmail, sendmail, Postfix, qmail, exim (my personal favorite), and even MS Exchange 2000/2003

5.  Integrates with Mail Clients Many free applications using SpamAssassin integration Integrates with Outlook  SpamAware SpamAware Free  SpamIntelligence SpamIntelligence $12.50 per year for updates Mail User Agents

6. Spam Aware

7.  Integrates with Mail Clients IMAP client integration  Squirrel mail plug-in Squirrel mail plug-in Pop 3 Filters  AllEmail AllEmail They collect all of your pop-3 email They scan it using SpamAssassin You download your sanitized email from them Works with almost all email services (not AOL) MUA - Continued

8. References  SpamAssassin: Welcome to SpamAssassin. (n.d.). Retrieved Aprila 19, 2006, from http://spamassassin.apache.org/http://spamassassin.apache.org/  FrontPage - Spamassassin Wiki. (n.d.). Retrieved April 20, 2006, from http://wiki.apache.org/spamassassin/http://wiki.apache.org/spamassassin/  Mail-SpamAssassin. (n.d.). Retrieved April 20, 2006, from www.cpan.org Web site: http://cpan.uwinnipeg.ca/dist/Mail-SpamAssassinhttp://cpan.uwinnipeg.ca/dist/Mail-SpamAssassin  Lewis, C. G. (n.d.). Exchange SpamAssassin Sink. Retrieved April 20, 2006, from http://www.christopherlewis.com/Exchange SpamAssassin.htmhttp://www.christopherlewis.com/Exchange SpamAssassin.htm