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Declude JunkMail Advanced spam control using many different tests with a variety of possible actions to take on spam. [Windows] MailShield MailShield filters e-mail before it gets to the mail server. Customizable. Free trial available. [Unix,Windows] ESCOM Corporation The Active SMTP Appliance is a hardware appliance that dynamically filters and quarantines junk e-mail before it gets to the mail server. [Hardware] SMTPD Spammer Deterrent Patched version of Obtuse SMTPD that provides content filtering and tar pitting. [Unix] SpamCon Foundation: Server Filters List of spam filtering programs and scripts for mail servers. Hijack Protection from anonymous Dial-in Access Prevents SMTP hijacking (outgoing spam) of the respective MX SMTP Server from anonymous Dial-In Users. [Unix] Extensible Messaging Platform - Anti-Spam Firewall 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] Hamster RBL-Check for Windows 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] Concentrico Keep Anti-Spam Appliance An antispam appliance, claiming that it is 98% effective at blocking spam. [Hardware] The Smtpblock Project Software to actively test for and block open mail relays and RBL-listed hosts. [Unix] |
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