mtpolicyd - 2.05-1.2 main

mtpolicyd is a modular policy daemon for postfix written in perl.
It has support for virtual hosts, session caching, per-user
configuration and is easily extensible thru plugins.
.
It already ships with a lot of plugins:
.
RBL - query DNS IP black/whitelists
DBL - query DNS domain black/whitelists
SqlList - use SQL query as black/whitelist
CtIpRep - use Commtouch IP reputation
GeoIP - use location of sending IP
Fail2ban - block spammers with fail2ban/iptables
Greylist - greylisting
SPF - Sender Policy Framework
Accounting - collect SMTP-level accounting information
Quota - apply quota limits based on Accounting data
and more... (see Documentation)