LoganEkz's Journal: Anti-SPAM Gateway Using OpenBSD

A really nice writeup is available at Forge's Flak Shack:

Fairly-Secure Anti-SPAM Gateway Using OpenBSD, Postfix, Amavisd-new, SpamAssassin, Razor and DCC

This document describes how to setup a spam-blocking email gateway based on open source and freely available software. This procedure is designed for a small to medium sized company with a single domain (multiple domains are possible...just not described here). I will describe how to setup a new computer that is meant to run on your network's DMZ in between the Internet and a corporate email server like Lotus Notes or Microsoft Exchange.