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- eWall - a programmable SMTP proxy with built-in SpamAssassin and ClamAV clients, an open, PHP-driven API, an extensible open source Repository, currently supporting all major SPAM filtering techniques (SPF, DNSBL, SURBL, harvester detection etc.), message Quarantine, SSL support and a Remote Admin Panel. View the full feature list. Free version available!
- CleanMail SMTP/POP3 Proxy - Seamless integration of SpamAssassin and ClamAV into any Windows or Linux-based email processing environment with just a few mouse-clicks - see http://www.byteplant.com/products/cleanmail/ for details.
- CommuniGate Pro (CGP) - See CommuniGate wiki page.
- Exim - Content Scanning with Spamassassin Documentation Page.
- Postfix First Step - Basic Integrating - at http://onetforum.com/fourm/viewtopic.php?p=27
- Z Postfix Secound Step - Basic Integrating with SPAM Quarantine - at http://onetforum.com/fourm/viewtopic.php?p=63#63
Training
- Guru Labs course GL275 - Feaures in-depth Spamassassin coverage (lecture and lab exercises) including MTA integration with Sendmail using milter and Postfix integration both after and before queueing