Postfix 3.1 · Version Status
Postfix 3.1 End of Life Date
Postfix 3.1 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Postfix 3.1 is past end of life. This version no longer receives security patches. 2246 days past EOL — migrate to a supported version immediately.
EOL Date
Mar 15, 2020
2246 days past EOL
Latest Release
3.1.15
Standard release
Release Date
Feb 24, 2016
Postfix 3.1 series
| Version | Latest | EOL Date | Status |
|---|
| 2.5 |
2.5.17 |
Feb 6, 2012 |
EOL |
| 2.6 |
2.6.19 |
Feb 11, 2013 |
EOL |
| 2.8 |
2.8.20 |
Feb 8, 2015 |
EOL |
| 2.9 |
2.9.15 |
Feb 24, 2016 |
EOL |
| 2.10 |
2.10.10 |
Feb 28, 2017 |
EOL |
| 2.11 |
2.11.11 |
Feb 21, 2018 |
EOL |
| 3.0 |
3.0.15 |
Feb 27, 2019 |
EOL |
| → 3.1 |
3.1.15 |
Mar 15, 2020 |
EOL |
What does Postfix 3.1 end of life mean?
When Postfix 3.1 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Postfix 3.1 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Postfix 3.11 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Postfix 3.1 reach end of life?
Postfix 3.1 reached end of life on March 15, 2020. This version is no longer receiving security patches.
Is Postfix 3.1 still supported?
No. Postfix 3.1 reached end of life on March 15, 2020 and is no longer receiving security patches.
What should I upgrade to from Postfix 3.1?
The recommended upgrade from Postfix 3.1 is
Postfix 3.11 — the latest actively supported version. Check the
Postfix full timeline for all supported versions.
What are the security risks of running Postfix 3.1 past EOL?
When Postfix 3.1 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Postfix should migrate immediately or implement compensating controls.