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Postfix

On the record

Community support
The postfix-users mailing list is for use questions, problem reports, and feature requests; the project describes participants as volunteers.postfix.org · read 8 Oct 2026
Container support
Postfix supports running as PID 1 in a Linux container and logging to stdout.postfix.org · read 8 Oct 2026
Database lookups
Optional lookup-table support includes LDAP, MongoDB, MySQL, PostgreSQL, and SQLite, with support depending on build configuration.postfix.org · read 8 Oct 2026
Data sources
Postfix supports lookup databases including LDAP, MySQL, PostgreSQL, SQLite, LMDB, and MongoDB.postfix.org · read 8 Oct 2026
Deployment
Postfix is built from source and runs on UNIX-like systems; operating-system and appliance vendors also distribute ready-to-run versions.postfix.org · read 8 Oct 2026
Deployment limit
Postfix is mail server software described for UNIX-like systems, rather than a hosted email service.postfix.org · read 8 Oct 2026
Documentation
The project provides documentation for configuration, troubleshooting, content inspection, SMTP access control, and database lookup tables.postfix.org · read 8 Oct 2026
Email security
Postfix supports opportunistic DANE TLS, which verifies server certificates using DNSSEC TLSA records.postfix.org · read 8 Oct 2026
Filtering
Postfix supports content filters and the Sendmail Milter mail-filter protocol.postfix.org · read 8 Oct 2026
Integrations
The add-on directory lists third-party tools for authentication, content filtering, policy services, webmail, and other functions; entries are maintained by their authors without formal evaluation.postfix.org · read 8 Oct 2026
Intended users
The project describes postfix-users as a forum for people using Postfix and postfix-devel as a list for those designing, implementing, or maintaining its source code.postfix.org · read 8 Oct 2026
Junk-mail controls
Its listed controls include per-client rate and concurrency limits, access controls, DNS-based lists, and postscreen zombie blocking.postfix.org · read 8 Oct 2026
Mail protocols
Postfix supports SMTP and LMTP features including SASL authentication, TLS, IPv6, and SMTPUTF8.postfix.org · read 8 Oct 2026
Operating systems
The project says source-built Postfix can run on UNIX-like systems including AIX, BSD, HP-UX, Linux, MacOS X, and Solaris.postfix.org · read 8 Oct 2026
Optional build features
Third-party database and other optional features may need to be enabled when Postfix is compiled.postfix.org · read 8 Oct 2026
Product
Postfix is Wietse Venema’s mail server, created as an alternative to Sendmail.postfix.org · read 8 Oct 2026
Purpose
Postfix aims to be fast, easy to administer, and secure.postfix.org · read 8 Oct 2026
Release maintenance
The September 7, 2026 announcement lists stable release 3.11.7 and legacy releases 3.10.14 through 3.5.28.postfix.org · read 8 Oct 2026

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