Anti-Spam SMTP Proxy

Infobox Software
name = Anti-Spam SMTP Proxy



caption =
author = [http://sourceforge.net/users/jhanna777/ John Hanna]
developer = [http://www.iworld.de/homes/fb/ASSP/ Fritz Borgstedt] in association with the ASSP community
latest_release_version = [http://sourceforge.net/project/showfiles.php?group_id=69172&package_id=68038&release_id=506000 1.3.1]
latest_release_date = May 4, 2007
latest_preview_version = [http://www.iworld.de/homes/fb/ASSP/ASSP_1.3.2pb 1.3.2]
latest_preview_date =
operating_system = Cross-platform
genre = Email spam filter
license = GNU General Public License
website = [http://assp.sourceforge.net assp.sourceforge.net]

The Anti-Spam SMTP Proxy (ASSP) server project is an Open Source platform-independent transparent SMTP proxy server that leverages numerous methodologies and technologies to both rigidly and adaptively identify e-mail spam. ASSP is easy to set up because it requires only minor changes to your MTA.

Foremost amongst ASSP's features are: Bayesian analysis, Penalty Box (PB) trapping, RBL (Real-time Black-hole Listing, aka DNSBL), URIBL (aka Uniform Resource Identifier Black Listing), multi-level SPF (aka Sender Policy Framework) validation and blocking, SRS (aka Sender Rewriting Scheme) fix-up, Session Delaying (aka Greylisting) and connection response delaying, sender validation and recipient validation, multi-level attachment blocking (based on block lists or allow lists), as well as multiple RFC validation mechanisms.

ASSP is a project on SourceForge.net.

See also

*Transparent SMTP proxy
*Spamassassin, popular open source spam filtering that uses razor and other techniques to detect spam.
*Qpsmtpd, a similar project

External links

* [http://assp.sourceforge.net/ ASSP official homepage]
* [http://www.asspsmtp.org/wiki/ ASSP Wiki]
* [http://www.iworld.de/homes/fb/ASSP/ ASSP beta development site]
* [http://www.sultanserver.com/ ASSP X free cPanel/WHM frontend for ASSP]