postfix-policyd-sf

Anti-spam plugin for Postfix (written in C)

Policyd is an anti-spam plugin for Postfix (written in C) that does : o Greylisting, o Sender-(envelope, SASL or host / ip)-based throttling (on messages and/or volume per defined time unit), o Recipient rate limiting, o Spamtrap monitoring / blacklisting, o HELO auto blacklisting o HELO randomization preventation, o Sender mail addresses or domain Sender blacklisting