Discover the best free and open source CAPTCHA tools for privacy-friendly bot protection, including proof-of-work and self-hosted options.
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Tag: anti-spam
8 Best Free and Open Source Linux Anti-Spam Tools
There are a number of techniques that help fight the tide of spam. These include whitelisting, spam buckets, Bayesian filtering, fuzzy logic techniques, and attachment scanning.
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Proxmox Mail Gateway – email security solution
Proxmox Mail Gateway is an email security solution helping you to protect your mail server against all email threats.
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SpamBayes – fight spam with this Python tool
SpamBayes is a Bayesian anti-spam classifier written in Python. SpamBayes is a tool used to segregate unwanted mail (spam) from the mail you want (ham).
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Scrollout F1 – for administrators without advanced email security experience
Scrollout F1 is an easy to use, highly configurable email firewall (gateway) for multiple domains and servers.
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Pyzor – spam-blocking networked system
Pyzor is an implementation of a spam-blocking networked system that use spam signatures to identify them.
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Rspamd – fast, free and open-source spam filtering system
Rspamd is an advanced spam filtering system that allows evaluation of messages by a number of rules.
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Anti-Spam SMTP Proxy Server – platform-independent SMTP Proxy server
ASSP is a Perl based transparent SMTP proxy server. ASSP relays the SMTP dialog between an incoming client and your SMTP server.
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Bogofilter – mail filter that classifies mail as spam or ham (non-spam)
Bogofilter is a mail filter that classifies mail as spam or ham (non-spam) by a statistical analysis of the message’s header and content.
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MailScanner – email security system design
MailScanner is a freely distributable E-Mail gateway virus scanner and spam detector. It uses sendmail or Exim as its basis.
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SpamAssassin – anti-spam platform
SpamAssassin is a mail filter using a variety of mechanisms including text analysis, Bayesian filtering, and DNS blocklists.
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