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Spam Filtering

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The Active SMTP Appliance is a hardware appliance that dynamically filters and quarantines junk e-mail before it gets to the mail server. [Hardware]
site exerpt
ESCOM® Corporation Home Page  In the time it takes you to read this paragraph, a spammer can forge your address and send a pornographic message or virus from you to other users on your own network. And if your mail system is like most,...
http://www.escom.com

Patched version of Obtuse SMTPD that provides content filtering and tar pitting. [Unix]
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SMTPD Spammer Deterrent  Deterrent is a patched version of the Obtuse SMTPD store and forward SMTP mail proxy that provides the following functionality useful in warding off spammers: Tar pitting Adds an administrator specified delay to each SMTP command after a number of...
http://sd.inodes.org/

List of spam filtering programs and scripts for mail servers.
http://www.spamcon.org/directories/server-filters.shtml

Prevents SMTP hijacking (outgoing spam) of the respective MX SMTP Server from anonymous Dial-In Users. [Unix]
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Antispam Spam Protection of anonymous Dial-in Access by Init Seven AG, Switzerland  G has developed a protection for it's anonymous Dial-In Access against abuse through spam. The configuration prevents the delivery of mail directly to the MX-Host of the recipient (avoiding the SMTP Server of the ISP This is (at least in...
http://www.init7.net/anti-spam/

Software intercepts spam, email-borne viruses, and other objectionable content before reaching your organization's mail server by utilizing complex contextual signatures as opposed to simple keyword lists. [Unix, Windows]
http://www.jak.com/spam_filter.htm

Free open-source software for users of the free Windows Hamster local news and mail server, to filter out spam using any of the publicly available Realtime Block Lists (RBL). [Windows]
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Using Realtime Block Lists with Hamster to combat spam  Are you getting ever more unsolicited emails (AKA spam or UBE Are you marred that the *nix guys have a slew of good tools to filter out UBE while there does not seem to be anything available for the average...
http://leggewie.biz/hamster.htm

An antispam appliance, claiming that it is 98% effective at blocking spam. [Hardware]
http://www.kill-spam.com

Software to actively test for and block open mail relays and RBL-listed hosts. [Unix]
http://www.angmar.com/smtpblock/

MailStripper is an SMTP-level spam filter with antivirus capability for Linux, FreeBSD and Solaris. [Unix]
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SMTP Spam Filter  This filter software works with SMTP-based MTAs by filtering the incoming SMTP stream. This will stop spam from reaching your mailbox. See what MailStripper can do for you. MailStripper makes it simple to stop spam it is much easier to...
http://www.eridani.co.uk/MailStripper/

Perl based spam and anti-virus filters. The content of individual messages and their attachments is analyzed across several broad categories. The program works with the Mercury32 email server. [Windows]
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STAT AntiSpam Filter Project  Spam rule set has been developed for use with the Mercury32 mail server for Windows. Mercury32 is one of the only freeware mail servers available for Windows. We use it under Windows XP, with our company handling email for three...
http://www.stat-communications.com/antispam/

Intent based filtering technology. Simply better e-mail. You plug it in, and all that junk email just goes away. [Hardware]
http://www.corvigo.com

How to filter spam with Spamassassin on Redhat 9. [Unix]
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Filtering Spam with Spamassassin on Redhat 9  M had finally gotten to the point in my life that I could stand it no more. Before I was just a little annoyed and sometimes mildly amused by various offers for septic tanks and promises of an enlarged male...
http://evillair.netdojo.com/howto/spamassassin.html

Challenge/response system. Multi-platform filtering free software written on Python. WLE requires a confirmation from unknown senders before delivering their mail in your mailbox. [Unix]
http://www.rfc1149.net/wle

Anti-spam software that acts as a proxy to existing SMTP servers. Filters E-mail based on DNS blacklists and individual filters such as keywords, IP, From address. [Unix,Windows]
http://www.logsat.com/sfi.asp

MessageWall is a secure spam/virus filtering SMTP proxy that works with any MTA. [Unix]
http://messagewall.org/

Supports domain banning, MAPS/RBL, and lexical scanning. Works with all SMTP servers. Trial version available for download. [Windows]
http://www.netiq.com/solutions/security/antispam.asp

The purpose of this add-on is to intercept each message passing through the IMail server. It then runs a range of tests to determine if the message is unsolicited commercial e-mail (UCE), commonly referred to as junk mail or spam. [Windows]
http://www.mxguard.com/postmaster

The Barracuda Spam Firewall handles over 10 million messages a day, without bogging down your email servers. [Hardware]
http://www.barracudanetworks.com

Advanced E-mail proxy incorporating Spamassassin. [Windows]
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HARTSOFT.COM  V merchandise now available Sensory Networks will provide hw acceleration for ClamAV ClamAV 0.82 protects against MS05-002 based exploits ClamAV proactively blocks new Bagle worm ClamAV 0.81 released WatchGuard announces ClamAV powered gateway anti-virus Big success of 0.80 read more...
http://www.hartsoft.com

Accurate, multi-platform spam filter updated several times per day using 60,000+ heuristics. Typically scans messages in under 200 milliseconds on modest hardware. [Unix,Windows]
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SortMonster Message Sniffer Advanced anti-spam Software  For each new user you refer, you will get a month added to your subscription! When your friends purchase Message Sniffer have them send us a note with your registered email address. NO LIMIT! Our Registered Users are encouraged to...
http://www.sortmonster.com/MessageSniffer/

Spam killer software. It blocks spam before it is even delivered to your mail server. [Windows]
http://www.smtptrap.com

The PowerElf II anti-spam appliance uses several different techniques to help stop spam at its entry point, before it has a chance to travel to the end-user’s mailbox. [Hardware]
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Domain Name Renewal and web hosting from Network Solutions  If you are the current registrant for this domain name* and wish to continue the registration on the domain, you must immediately renew the domain to ensure the name is not deleted from your account Once a domain name has...
http://www.greencomputer.com/pro...owerelf2/features/antispam.shtml

A very effective anti-spam appliance. MailFoundry creates a spam firewall for effectively stopping spam. [hardware]
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Anti Spam Spam Filter Spam Appliance MailFoundry by Solinus  From small businesses to large networks, MailFoundry™ offers the best in protection at a fraction of the cost of other products. MailFoundry™ is the ultimate anti-spam appliance available on the market today. What makes MailFoundry™ unique is our MessageIQ™ Engine...
http://www.solinus.com/mailfoundry/

Email filtering network appliance. Provides accurate anti-spam and anti-virus protection for both small and large businesses. [hardware]
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CPU Technologies Inc.  Desktop Support Services Help Desk Linux/Unix/Oracle Administration Custom Software Development Internet Hosting Project Management Security Evaluation Procurement/Rentals Copyright 2004 CPU Technologies Inc....
http://www.claromail.com

Mail Warden Pro is E-mail server security software with anti-spam, anti-virus and content filtering for any mailserver. [Windows]
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Secure email server software anti virus, and anti spam mail server  Software designed for any size, or type of organization and that will work with any SMTP capable system, including MS Exchange™ and Lotus Domino™ email servers. With Mail Warden Pro 6.0 you don’t have to worry about additional product add-ons,...
http://www.seattlelab.com/products/mailwardenpro/default.asp

Spam control using Blacklists, mark spam by modifying subject, anti relay possiblities. [Windows]
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Pinjo revealer SMTP Spamfilter Home  Therefor it is using the engine of Award-Winning SpamAssassin™ to check the emails. Main Menu Home FAQ Blog Links Contact Us Search Online help Who's Online We have 15 guests online Download Trial key Purchase Pinjo 2.1 is here! Home...
http://www.pinjo.nl/

Explains how to build a Debian anti-spam and anti-virus gateway E-mail server using Postfix, amavisd-new, SpamAssassin, Razor, DCC, Pyzor and ClamAV.[Unix]
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Debian Anti-Spam Anti-Virus Gateway Email Server using Postfix, Amavisd-new, SpamAssassin, Razor, DCC, Pyzor, and ClamAV HOWTO  Archives old versions of documents no longer maintained. Other documents I have created: Additional anti-UCE settings for our Debian Anti-Spam Anti-Virus Gateway Email Server using policyd-weight, postgrey or RBLs. Upgrading a Debian Anti-Spam Anti-Virus Email Server from amavisd-new 20030616-p10 to...
http://www200.pair.com/mecham/spam/

JSpamFilter is Java-based, performs both source and content filtering, and provides a variety of treatment options. It is high-performance and highly customizable. [Java]
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Modest Software::JSpamFilter::Cross-Platform Spam Filter For All SMTP Mail Servers.  Click on the first link below for a tour of JSpamFilter's features. Or click here to start the tour: If you prefer, you can click on any link below to jump right to that section of the tour. Click here...
http://www.modestsoftware.com/jspamfilter.cfm

A small, fast, open-source spam filter. Designed to work with or replace SpamAssassin. Uses DNSBL lookups to discriminate spam. [Unix]
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rblsd  It filters mail by performing a series of RBL lookups on each message. This results in fast, accurate, low-load spam filtration. This can be used as a standalone, drop-in replacement for SpamAssassin, or as an additional filter to increase mail...
http://rblsd.sourceforge.net/

Tethernet TetherFilter is an easy to deploy, affordable anti-spam and anti-virus appliance that can be used in front of any existing Internet email server. [Hardware]
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Tethernet, Inc Anti-Spam Appliance Anti-Virus Appliance Spam Firewall Spam Filter  Reply to request information you from TetherFilter Anti-Spam and Anti-Virus Appliance Solutions Tethernet’s TetherFilter offers a complete anti spam and anti-virus solution in an easy to deploy appliance. With accurate anti-spam technology, near-zero administration and simple deployment TetherFilter can effectively...
http://www.tethernet.com

MailChannels eliminates false positives by using a new technique using subdomains in E-mail addresses. [Windows]
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MailChannels: The Assured Messaging Company  Channels delivers assured messaging solutions aimed at rebuilding trust and confidence in modern email systems. Through a set of innovative solutions such as TrafficControl, MailChannels empowers organizations who need to stay in touch with customers, colleagues, and information sources without...
http://www.mailchannels.com

This article explains how to set up ACLs in Exim 4 to reject spam.
http://www.maretmanu.org/homepage/inform/exim-spam.html

A Java program using a Chi Square algorithm to detect spam. It is best suited to developers wishing to integrate anti-spam services into an existing server based java E-mail application, but can be used for client applications. [Java]
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jASEN The java Anti Spam ENgine  N is best suited to developers wishing to integrate anti-spam services into an existing server based java email application, but can be used for client applications History The jASEN project started after the now famous article published by Paul Graham...
http://jasen.sourceforge.net

ePrism is an email filter and spam filtering appliance that provides organizations with a total secure email perimeter defense solution. [Hardware]
site exerpt
Email security, secure email filter gateway ePrism spam filters spam control  Powered by the human intelligence of eGuard, the ePrism M500 offers award-winning anti-virus protection and next generation anti spam filters spam control technology in an easy-to-use appliance that starts working as soon as it's connected to your network. Get More...
http://spam-filters.stbernard.com

Spam Sleuth Enterprise is anti-spam software that filters spam, viruses, web bugs, and phishing scams. Eliminates unwanted junk e-mail from corporate servers. [Windows]
site exerpt
antispam server software Spam Sleuth Enterprise  Enterprise eliminates spam, harmful viruses, web bugs, and phishing scams for your entire organization. The perfect anti-spam solution for ISPs, businesses, schools, governments and other organizations. Works with any e-mail server.Free toll-free technical support (800-403-0925) for the first year and...
http://www.bluesquirrel.com/products/spamsleuthenterprise/

An internet security company offering solutions to prevent spam, phishing, viruses, policy violations, and denial of service attacks. [Hardware]
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Spam Filter, Email Security MailFrontier  Is it lights out for email? MailFrontier Business Soars in Third Quarter Compliance and Email Security Go Hand in Hand Learn More Comprehensive email security Enterprise Software Enterprise Appliance Small Business Individual Small Office Upcoming Events Phishing IQ Test Versions:...
http://www.mailfrontier.com/