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About Rspamd

Introduction​

Rspamd is an advanced mail processing framework that works as a secure addition to your Mail Transfer Agent (MTA). Operating independently from MTA internal mail flows, Rspamd provides enhanced security isolation while delivering comprehensive message analysis and processing capabilities.

Built around a complete Lua scripting framework, Rspamd enables flexible message processing through:

  • Spam filtering with statistical analysis and rule-based detection
  • Policy control and compliance enforcement
  • DKIM signing and authentication
  • Machine learning integration for adaptive filtering
  • Security tools orchestration and threat intelligence

Each message is evaluated using multiple detection methods including regular expressions, statistical analysis, and custom services such as URL blacklists. Based on the computed spam score and configured policies, Rspamd recommends actions for the MTA - whether to pass, reject, quarantine, or modify messages.

Designed for high-performance environments, Rspamd processes hundreds of messages per second while maintaining the flexibility to adapt to evolving security requirements through its extensible Lua API.

Choose your path​

This documentation is designed to help you succeed with Rspamd, whether you're a complete beginner or an experienced administrator. Choose the path that matches your needs:

🆕 New to Rspamd?​

Start here: Getting started

🎯 Need practical configuration?​

Go to: Configuration guides

🔧 Need technical reference?​

Use the traditional documentation sections below

Quick start options​

If you want to get started immediately:

Docker test setup (15 minutes)​

# Quick test environment
docker run -d --name rspamd-test -p 11334:11334 rspamd/rspamd:latest
# Access web interface at http://localhost:11334

Production package install (Ubuntu/Debian)​

# Add repository key and list (modern keyring method)
sudo install -d -m 0755 /etc/apt/keyrings
wget -O- https://rspamd.com/apt-stable/gpg.key | gpg --dearmor | sudo tee /etc/apt/keyrings/rspamd.gpg > /dev/null
echo "deb [signed-by=/etc/apt/keyrings/rspamd.gpg] https://rspamd.com/apt-stable/ $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/rspamd.list
sudo apt update && sudo apt install -y rspamd

For complete setup instructions, see the installation guide.

Community and support​

License​

This project is licensed under the Apache 2.0 License