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rspamd

Network Security

An advanced spam filtering system and email processing framework for MTAs

C Latest 4.1.3 · 1d ago Security brief →

Features

  • High‑performance spam filtering with regex, statistical and URL‑blacklist rules
  • Milter support for direct integration with Postfix, Sendmail and other MTAs
  • Comprehensive Lua API for custom plugins and asynchronous network calls

Recent releases

View all 6 releases →
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4.1.3 Breaking risk
Breaking upgrade Dependencies

WebUI redesign + security fixes

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4.1.2 Breaking risk
RCE / SSRF Crypto / TLS

MIME recursion bound + lua_task change

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4.1.1 Bug fix
Breaking upgrade

SIGSEGV fix on DNS startup

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4.1.0 Breaking risk
Auth RCE / SSRF Dependencies

mx_check incompatible + checkv3 metadata

4.0.1 Bug fix

Introduced layered settings merge with conflict override and fuzzy dynamic blocks for Lua, and fixed a proxy file descriptor leak and self-scan timeout bug that could cause resource exhaustion.

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The CVE patches and breaking changes that affected production tools this week. One email, every Sunday.

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About

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Forks
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Languages
C C++ Lua

Install & Platforms

Platforms
linux macos

Beta — feedback welcome: [email protected]