Anti-Spam SMTP Proxy

Features

• Hidden Markov Model spam filtering
• Bayesian spam filtering
• whitelisting
• Penalty Box trapping
• DNSBL/RBL
• URIBL
• Multi-level SPF validation and blocking
• DKIM signing and validation
• DMARC validation and reporting
• SRS fix-up
• Session Delaying/Greylisting and connection response delaying
• Sender validation and recipient validation
• Multi-level attachment blocking
• As well as multiple RFC validation mechanisms.
• Multi-threaded
• Platform independent