Postgrey is a Postfix policy server implementing greylisting developed by David Schweikert. When a request for delivery of a mail is received by Postfix via SMTP, the triplet CLIENT_IP / SENDER / RECIPIENT is built. If it is the first time that this triplet is seen, or if the triplet was first seen, less than 5 minutes ago, then the mail gets rejected with a temporary error. Hopefully spammers or viruses will not try again later, as it is however required per RFC.
Happy Moose is a super-efficient cloud anti-SPAM solution for organizations. It stops up to 99.7% of SPAM, and no false positi ...
Use this program to "Unspam" your mailbox(es). The program can be integrated with the mail server to automatically filter all ...
Professional e-mail security free for private use: With Spamfence.net eleven offers the professional e-mail security of the sp ...
SpamSieve is an extremely accurate and easy to use Bayesian spam filter for Mac e-mail programs. Macworld's "Software of the Y ...
MailRoute provides a hosted service for mail protection from virus and spam. MailRoute is a secure, hosted cloud email filteri ...
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Spam Reader is a free anti-spam add-on for Microsoft Outlook. The software uses the most reliable approach to block junk email ...
This program helps you block spam and worms before they reach your mailbox.