Anti Spam SMTP Proxy Server

The Anti-Spam SMTP Proxy (ASSP) Server project aims to create an open source platform-independent SMTP Proxy server which implements auto-whitelists, self learning Bayesian, Greylisting, DNSBL, DNSWL, URIBL, SPF, SRS, Backscatter, Virus scanning, attachment blocking, Senderbase and multiple other filter methods. Click 'Browse all files' to download the professional version 2.2.1 build 12313.
 

Features
 
 Multiple Weighted DNSBLs
 Multiple Weighted URIBLs
 Greylisting
 Weighted Regular Expression Filtering
 Bayesian
 Penalty Box
 SenderBase
 SSL/TLS
 SPF/SRS
 Attachment Blocking
 ClamAV and FileScan
 Blocking Reporting
 LDAP support
 Backscatter Detection
 V2 - recipient replacement / GUI user access rights management
 V2 - MIME charset conversion / DKIM check and signing
 V2 - DB support for all hashes / level based open plugin support
 V2 - transparent proxy support / BATV check and signing
 V2 - Plugins: archive, full attachment check and replacement, OCR
 V2 - damping (steal spammers time)
 V2 - AUTH to relay host / POP3 collector
 V2 - configuration value and file synchronization
 V2 - Block Reports design could be customized
 V2 - Razor2 and DCC support via Plugin
 V2 - SNMP support (monitoring, configuring, controll-API)
 V2 - user group import (file or LDAP or command based)
 V2 - automatic crash analyzer Hidden Markov Model
 V2 - IPv6 socket support
 V2 - word stemming (several languages) for Bayesian analyzer
 V2 - Perl module autoupdate via PPM or CPAN
 V2 - Hidden Markov Model spam detection engine
 V2 - full unicode support
 V2 - DMARC support
 V2 - privat Whitelist (legacy, domain based, user based)

Download Anti-Spam SMTP Proxy Server