spam filtering

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• - Patched version of Obtuse SMTPD that provides content filtering and tar pitting. [Unix]
  
• - This article explains how to set up ACLs in Exim 4 to reject spam.
  
• - The Barracuda Spam Firewall handles over 10 million messages a day, without bogging down your email servers. [Hardware]
  
• - 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]
  
• - Email filtering network appliance. Provides accurate anti-spam and anti-virus protection for both small and large businesses. [hardware]
  
• - Appliance filters mail coming into your network for spam and dangerous content. [Hardware]
  
• - Software to actively test for and block open mail relays and RBL-listed hosts. [Unix]
  
• - A very effective anti-spam appliance. MailFoundry creates a spam firewall for effectively stopping spam. [hardware]
  
• - 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]
  
• - Intent based filtering technology. Simply better e-mail. You plug it in, and all that junk email just goes away. [Hardware]
  
• - MailStripper is an SMTP-level spam filter with antivirus capability for Linux, FreeBSD and Solaris. [Unix]
  
• - 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]
  
• - 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]
  
• - Advanced E-mail proxy incorporating Spamassassin. [Windows]
  
• - Prevents SMTP hijacking (outgoing spam) of the respective MX SMTP Server from anonymous Dial-In Users. [Unix]
  
• - Advanced spam control using many different tests with a variety of possible actions to take on spam. [Windows]
  
• - 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]
  
• - Supports domain banning, MAPS/RBL, and lexical scanning. Works with all SMTP servers. Trial version available for download. [Windows]
  
• - MailShield filters e-mail before it gets to the mail server. Customizable. Free trial available. [Unix,Windows]
  
• - E-mail firewall for antispam and junk e-mail filtering. Also blocks viruses, hackers and secures e-mail. [Hardware]
  
• - 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]
  
• - 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]
  
• - CanIt is a flexible server-based anti-spam solution built around SpamAssassin. [Unix]
  
• - MailChannels eliminates false positives by using a new technique using subdomains in E-mail addresses. [Windows]
  
• - A small, fast, open-source spam filter. Designed to work with or replace SpamAssassin. Uses DNSBL lookups to discriminate spam. [Unix]
  
• - 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]
  
• - The Active SMTP Appliance is a hardware appliance that dynamically filters and quarantines junk e-mail before it gets to the mail server. [Hardware]
  
• - Mail Warden Pro is E-mail server security software with anti-spam, anti-virus and content filtering for any mailserver. [Windows]
  
• - How to filter spam with Spamassassin on Redhat 9. [Unix]
  
• - 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]
  
• - 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]
  
• - Spam control using Blacklists, mark spam by modifying subject, anti relay possiblities. [Windows]
  
• - An antispam appliance, claiming that it is 98% effective at blocking spam. [Hardware]
  
• - SMTP Trap is spam killer software. It blocks spam before is is even delievred to your mail server. [Windows]
  
• - MessageWall is a secure spam/virus filtering SMTP proxy that works with any MTA. [Unix]
  
• - 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]
  
• - 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]
  
• - List of spam filtering programs and scripts for mail servers.
  
  

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