Postfix
Fast, secure and reliable mail transfer agent
Postfix is a widely deployed mail transfer agent that routes and delivers email. It is the SMTP backbone of countless self-hosted mail servers thanks to its security and performance.
Key features
- High-performance SMTP server
- Strong security architecture
- Flexible routing and policy
- De facto standard MTA
Pros & cons
Strengths
- Battle-tested and stable
- Extensive documentation
Trade-offs
- Configuration has a steep curve
- Only handles mail transfer
Is Postfix secure?
OSV.dev has no published security advisories for Postfix's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.
Source: OSV.dev, checked 2026-10-14. How this is measured.
Postfix replaces
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