Download ASSP(Anti-Spam SMTP Proxy) 1.9.1.0

Anti-Spam SMTP Proxy (ASSP) server project is a free, Open Source, Perl based, platform-independent transparent SMTP proxy server available at SourceForge.net that leverages numerous methodologies and technologies to both rigidly and adaptively identify e-mail spam.

ASSP is easy to set up because it requires only minor changes to the configuration of your Mail Transfer Agent.