Looking for a reliable email filtering solution? Look no further than Anti-Spam SMTP Proxy Server (ASSP). Developed by Sourceforge, ASSP is a powerful tool that helps to prevent spam and protect your network. With its advanced algorithms and user-friendly interface, ASSP makes it easier than ever to keep your inbox free of unwanted and dangerous messages. Whether you're a business, organization, or individual user, ASSP has the features and performance you need to stay protected. Download now and enjoy a safer, more secure email experience.

The Anti-Spam SMTP Proxy (ASSP) Server project aims to create an open source platform-independent SMTP Proxy server which implements auto-whitelists, self learning Bayesian, Greylisting, DNSBL, DNSWL, URIBL, SPF, SRS, Backscatter, Virus scanning, attachment blocking, Senderbase and multiple other filter methods. Click 'Browse all files' to download the professional version 2.4.5 build 15272.

V1 development has been stopped at the end of 2014 (1.10.1 build 14365). Possibly there will be done some bugfixing in future.

Features:

Multiple Weighted DNSBLs
Multiple Weighted URIBLs
Greylisting
Weighted Regular Expression Filtering
Bayesian
Penalty Box
SenderBase
SSL/TLS
SPF/SRS
Attachment Blocking
ClamAV and FileScan
Blocking Reporting
LDAP support
Backscatter Detection
V2 - recipient replacement / GUI user access rights management
V2 - MIME charset conversion / DKIM check and signing
V2 - DB support for all hashes / level based open plugin support
V2 - transparent proxy support / BATV check and signing
V2 - Plugins: archive, full attachment check and replacement, OCR
V2 - damping (steal spammers time)
V2 - AUTH to relay host / POP3 collector
V2 - configuration value and file synchronization
V2 - Block Reports design could be customized
V2 - Razor2 and DCC support via Plugin
V2 - SNMP support (monitoring, configuring, controll-API)
V2 - user group import (file or LDAP or command based)
V2 - automatic crash analyzer Hidden Markov Model
V2 - IPv6 socket support
V2 - word stemming (several languages) for Bayesian analyzer
V2 - Perl module autoupdate via PPM or CPAN
V2 - Hidden Markov Model spam detection engine
V2 - full unicode support
V2 - DMARC support
V2 - privat Whitelist (legacy, domain based, user based)
V2 - privat IP and Domain lists (legacy, domain based, user based)
V2 - CPU affinity settings
V2 - web file commander
V2 - graphical statistic output (SVG)
V2 - native SSL support for target hosts
V2 - client SSL-certificate validation
V2 - privat and corporate SMIME signing

New Release
The definition in 'myGreeting' has only replaced the last greeting line (220 text) from the MTA, lines starting with 220-text were not touched. Now all greeting lines are replaced.
Under rare conditions it was possible, that the penaltybox black and white contained wrong formated entries. Such entries are now removed from these lists.
[ Anti-Spam SMTP Proxy Server release history ]

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