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SpamAssassin

My posts on the nolug list:

• http://joeykelly.net/nolugarchives/3842.html — deals with SoBig virus bouces.
• http://joeykelly.net/nolugarchives/3804.html — a way to proactively delete virus-laden emails using procmail.

SpamAssassin's homepage: http://spamassassin.org.

A Guide to Writing your own Add-On Rules for SpamAssassin

How to integrate SpamAssassin with your MTA

Using Amavis-new to pipe through SA

Direct link to the VirusBounceRules page: http://www.exit0.us/index.php/VirusBounceRules (here's a more up-to-date page)

Way cool procmail recipe to nuke malware: http://agriroot.aua.gr/~nikant/nkvir/

Windows-bound? Try SAproxy.

Other options for fighting spam

• Stopping spam with Linux
• http://www.sng.ecs.soton.ac.uk/mailscanner/
• DNS Blacklist Packet Filter
• Rejecting bogus virus bounces with Postfix
• Enhancing E-Mail Security With Procmail
• Postfix tips

My ideal layered approach would be:

• postfix with postgrey and clamav
• sane RBLs (I do this already with sendmail)
• spamassassin
• that deal that scans for embedded URLs in spam
• attachment filtering of banned extensions
• intelligent procmail recipes, see above
• host-based antivirus scanning

What I've implemented so far...

Want to add your thoughts?

Use the SpamAssassinComments page.