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Fairly-Secure Anti-SPAM Gateway Using OpenBSD

This document describes using OpenBSD with Postfix, Amavisd-new, SpamAssassin, Vipul's Razor and DCC to setup a spam-blocking email gateway. It incluces runnning all network processes in a restricted-user/chroot environment. The article gives step-by-step directions including upgrading OpenBSD and installing ports.

The following is a short quote from the very lengthy document:

Amavisd-new is the main filter which processes email from postfix and ensures that we don't lose any mail. Amavisd-new is an huge improvement over the original amavis which was a simple virus scanner, and I think it is the best way of implementing SpamAssassin. SpamAssassin is the main anti-spam component which works by comparing messages to a ruleset and by using a statistical analysis that is custom built based on your email. In addition to the SpamAssassin spam detection software, we will be using 2 online SPAM databases: DCC and Vipul's Razor.

Read it at

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ONLamp: Patching OpenBSD


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Stop Spam Abuse: What operating system's CVS history begins in March 1993?

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September 16, 2013 11:24:31

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