ASSP the best free Open Source Anti-Spam SMTP Proxy

Last Updated on Tuesday, 16 February 2010 15:21 Written by Joe Aldeguer Monday, 19 January 2009 23:01

When I first started reading about ASSP a year ago, I was some what skeptical as to what the developers claimed it could do until I begun using it at work.

Disclaimer: There is no guarantee this will work for you. Created for author's personal use.

Incredibly even during testmode, ASSP is already proving to be very effective in preventing spam from reaching my mail server. Within a few months after using ASSP, I was then ready to take ASSP off testmode. Overnight the number of spam messages ending up in users inboxes dropped significantly. Information used to develop this "how-to" was gathered from ASSP's website and my own trial and error process. (This how-to does not cover clamav integration I have virus scanning done at the mail server instead.)

My ASSP network topology. For a basic ASSP workflow go here.

Note: Words in italics will need to be typed at the shell prompt.