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 Hidden-Markov-Model and/or Bayesian, Greylisting, DNSBL, DNSWL, URIBL, SPF, SRS, Backscatter, Virus scanning, attachment blocking, Senderbase and multiple other filter methods. Click 'Files' to download the professional version 2.6.1 build 17355.
An linux and a freeBSD based OVA of ASSP V2 are also available for download.

NOTICE:
V1 development has been stopped at the end of 2014 (1.10.1 build 16060). Possibly there will be done some bugfixing in future.

Please upgrade to V2, which is and will be actively maintained.

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 - multi DB support for all hashes / level based open plugin support
  • V2 - transparent TCP proxy support
  • 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 SMIME signing
  • V2 - corporate SMIME signing, using a single privat certificate
  • V2 - content based executable attachment blocking
  • V2 - content based compressed attachment blocking
  • V2 - BATV check and signing
  • V2 - Message-ID signing and check FBMTV
  • V2 - remote support

Project Samples

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Categories

Filters, Anti-Spam

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Additional Project Details

Languages

Dutch, English

Intended Audience

Information Technology, System Administrators

User Interface

Web-based

Programming Language

Perl

Database Environment

Perl DBI/DBD, Oracle, MySQL, PostgreSQL (pgsql), IBM DB2, SQL-based, Microsoft SQL Server, Berkeley/Sleepycat/Gdbm (DBM), ODBC

Registered

2002-12-11