This website has information about the Postfix source code distribution. Built from source code, Postfix can run on UNIX-like systems including AIX, BSD, HP-UX, Linux, MacOS X, Solaris, …

Starting with Postfix version 3.6, the compatibility level in the above warning message is the Postfix version that introduced the last incompatible change. The level is formatted as …

This document covers basic Postfix configuration. Information about how to configure Postfix for specific applications such as mailhub, firewall or dial-up client can be found in the …

How Postfix TLS support works The diagram below shows the main elements of the Postfix TLS architecture and their relationships. Colored boxes with numbered names represent Postfix …

It has several independent modules: Postfix Queue Manager, LDAP management, Cyrus-IMAP Mailbox management and Cyrus-Sieve management. KyaPanel server manager from Anahuac.

In particular, do not proceed here if you don't already have Postfix working for local mail submission and for local mail delivery. The first part of this document presents standard …

The Postfix SMTP server receives mail from the network and is exposed to the big bad world of junk email and viruses. This document introduces the built-in and external methods that …

The Postfix architecture overview ends with a summary of command-line utilities for day-to-day use of the Postfix mail system. Besides the Sendmail-compatible sendmail (1), mailq (1), and …

With Postfix address verification turned on, normal mail will suffer only a short delay of up to 6 seconds while an address is being verified for the first time. Once an address status is known, …

Successful authentication in the Postfix SMTP server requires a functional SASL framework. Configuring SASL should therefore always be the first step, before configuring Postfix. You …