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MailCleaner Open Source Edition is now discontinued but will continue under the spamtagger project
https://github.com/SpamTagger
[antispam] MailCleaner is an anti-spam / anti-virus filter SMTP gateway with user and admin web interfaces, quarantine, multi-domains, multi-templates, multi-languages. Using Bayes, RBLs, Spamassassin, MailScanner, ClamAV. Based on Debian. Enterprise ready.
MailCleaner is an anti spam gateway installed between your mail infrastructure and the Internet.
It includes a complete GNU/Linux OS and a graphical web interface for user and administrative access. ...
Highly scalable/configurable Messaging Platform allowing users in a domain to be distributed on multiple hosts, has multiple queues. Provides virtual domains/users in MySQL. Modern MSP class qmail replacement with ESMTP, POP3/IMAP, QMTP, QMQP support
Copfilter is a easy to install addon for the opensource firewall IPCop. It filters POP3, SMTP, HTTP, and FTP traffic for viruses and spam using various open source programs.
Plugin for Irssi which monitors torrent IRC announce channels, downloads torrent files based on a user-defined filter, and then sends the torrent files to a local or remote torrent client. Supports several different private trackers.
Metaspam permits the simultaneous use of more then one antispam engine (ASE) with a single interface. ASEs have different sensitivity and specificity profiles and using more than one can enhance our ability to detect spam.
An open, all-in-one SMTP gateway, scanning your email traffic in order to prevent spam and viruses, using several anti-spam technologies. Based on Ubuntu Server.
tkpgp is a gui front-end to the Gnu Privacy Guard PGP implementation. It provides a selection-based channel that enables simple and convenient integration with other applications.
Cheescloth is a security script that is used to monitor and block email being brute force sent to your mail server by zombie machines in control by spammers and hackers. It also will catch and block hackers trying to hack your server via SSH connection
A BASH function library of neat stuff for dealing with electronic mail. The library provides support for unencrypted and TLS encrypted relaying of email with attachments, special mailing list filtering and From address spoofing.
SpamSnake/mHost is a open source based spam filtering appliance. Its primary goal is to provide a very flexible platform from which to implement current and future open spam filtering solutions enterprise and small networks.
A chkuser plugin for qmail with vpopmail and spp plugin.
This plugin will reject incomming mail if the given recieving address is not on the server. Works with smtp-auth, vpopmail, valias, ezmlm, .qmail-alias, aliasdomains and valias on aliasdomain.
A cronscript to run regulary to analyse the qmail-scanner log. It picks out some information that might be of interest to the users of the server. Stores this in mysql. Users may access information related to their account through a squirrelmail plugin.
SpamList is a simple system to maintain your internal whitelists and blacklists for spam control. Includes PHP scripts to manage the master list and shell scripts to distribute to one or more servers.
An advanced qmail distribution based on qmail-sql which has SMTP, SMTPS, POP3, POP3S, IMAP, IMAPS services, a content scanner, spoofing protections, SMTP AUTH support, SMTP-after-POP/IMAP, PHP5 API, SPF support and much more...
Procmail is a mail processing utility
for Unix. The pm-lib is collection of many plug-in modules:
parse dates, time, email addresses, mail forward, pop3,
Spam detection, Cron, MIME file servers, daemon messages and more. PROJECT MOVED. See Github user jaalto.
The Pals Antispam Mail Filter marks mail from people you have not designated as being one of your pals. The package includes a pal harvester which extracts addresses in mail you send from the To:, Cc:, and Bcc: fields, and designates them as a pal.
dspam-filter is a filter to invoke the anti-spam tool DSPAM directly from the embedded maildrop in vpopmail via dot-qmail forwarding. DSPAM masquerades as the email server's LDA. However most users of Qmail prefer to leave the qmail-queue intact.
phpMyBlacklist: A project for creating and managing an email blacklist or RBL lists. The project includes steps for setting up the required zone in your name server, the required database, the web administration and a simple shell cronjob script.
An antivirus software for email server that filter mails with dangerous attachment. It works in concatenation with procmail (sw by van den Berg). Don't need a database of signature because just don't permit executable attachments.
Tarbaby is a new threshold and rate limiting spam prevention tool. The intent is in creating a thresholding and verification engine to be tied into other spam prevention tools.
P.O.E. is a collection of scripts that allow you to use Bill Yerazunis's CRM114 spam filter with Mozilla and Netscape web browsers. You must have qmail, getmail, and other things installed to use P.O.E. See Instructions on the P.O.E. Home Page.