DSPAM

DSPAM is a scalable and open-source content-based spam filter designed for multi-user enterprise systems. On a properly configured system, many users experience results between 99.5% – 99.95%, or one error for every 200 to 2000 messages. DSPAM supports many different MTAs and can also be deployed as a stand-alone SMTP appliance. For developers, the DSPAM core engine (libdspam) can be easily incorporated directly into applications for drop-in filtering (GPL applies; commercial licenses are also available).

homepage
– documentation
– dag rpm repo 1
– dag rpm repo 2
– rpm package for RedHat
– rpm from rpmfind.net
– dspam utilities

– Integrating DSPAM, Qmail, and VPopmail
– FAQ
– WIKI
DSPAM with Qmail