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rspamd

Network Security

An advanced, high‑performance spam filtering system and email processing framework that evaluates messages with rules, statistical analysis, and Lua plugins for MTAs

Track releases GitHub
C Latest 4.0.1 · 1mo ago Security brief →

Features

  • Spam detection using regexes, statistical filters, URL blacklists and more
  • Lua API for custom rule development and plugin creation
  • Async network calls (DNS, HTTP, TCP/UDP) via built‑in asynchronous API
  • Milter support for direct integration with Postfix, Sendmail and other MTAs

Recent releases

View all 2 releases →
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.

View release on GitHub
4.0.0 Breaking risk
Breaking changes
  • Jump Hash replaced with Ring Hash for Redis sharding
  • Content URLs included by default from computed parts
  • SSL auto-detection replaces ssl=true option
Notable features
  • /checkv3 multipart protocol
  • Pluggable async Hyperscan cache with Redis
  • HTML fuzzy phishing detection
View release on GitHub

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About

Stars
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Forks
473
Languages
C C++ Lua
View on GitHub Documentation

Install & Platforms

Install via
binary
Platforms
linux

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