The Postfix Home Page
All programmers are optimists -- Frederick P. Brooks, Jr.
First of all, thank you for your interest in the Postfix project.
What is Postfix? It is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program. After eight years at Google, Wietse continues to maintain Postfix.
Postfix attempts to be fast, easy to administer, and secure. The outside has a definite Sendmail-ish flavor, but the inside is completely different.
SMTP Smuggling Attack: an email spoofing attack was published a few days before Christmas 2023, before people had an opportunity to update their Postfix and other mail systems. Updates are now available for all supported Postfix stable releases. More at smtp-smuggling.html.
About this website
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, and more.
Postfix is also distributed as ready-to-run code by operating system vendors, appliance vendors, and other providers. Their versions may have small differences with the software that is described on this website.