MarketAnti-Spam SMTP Proxy
Company Profile

Anti-Spam SMTP Proxy

The Anti-Spam SMTP Proxy (ASSP) is an open-source, Perl-based, platform-independent transparent SMTP proxy server.

Features
Some ASSP's features are: • Hidden Markov model spam filtering • Bayesian spam filtering • whitelisting • Penalty Box (PB) trapping • DNSBL/RBL (Realtime Blackhole Listing) • URIBL (Uniform Resource Identifier Black Listing) • Multi-level SPF (Sender Policy Framework) validation and blocking • DKIM signing and validation • DMARC validation and reporting • SRS (Sender Rewriting Scheme) fix-up • Session Delaying/Greylisting and connection response delaying • Sender validation and recipient validation • Multi-level attachment blocking (based on block lists or allow lists or content based executable blocking) • As well as multiple RFC validation mechanisms. • Multi-threaded (Since version 2.x) • Platform independent (written in Perl) == See also ==
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