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 …

All Postfix manual pages ; Rejecting Unknown Local Recipients ; Address Classes ; Connection cache howto ; DSN support ; BDAT (CHUNKING) support ; Guidelines for Package Builders …

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 …

By default, Postfix configuration files are in /etc/postfix. The two most important files are main.cf and master.cf ; these files must be owned by root. Giving someone else write permission to …

Execute the command "postmap /etc/postfix/virtual" after editing the file. Running Postfix behind a firewall. The simplest way to set up Postfix on a host behind a firewalled network is to send all …

Postfix runs (or has run) on AIX, BSD, HP-UX, IRIX, LINUX, MacOS X, Solaris, Tru64 UNIX, and other UNIX systems. It requires ANSI C, a POSIX.1 library, and BSD sockets. In addition, …

New Postfix users should first look at the following introductory documents. These introductions are hyperlinked to more advanced documents and to UNIX-style manual pages. The UNIX …

To prevent Postfix from sending multiple recipients per delivery request, specify transport_destination_recipient_limit = 1 in the Postfix main.cf file, where transport is the name …

By default, Postfix sendmail reads a message from standard input until EOF or until it reads a line with only a . character, and arranges for delivery. Postfix sendmail relies on the postdrop …

By default, the postfix command sets up a standardized environment and runs the postfix-script shell script to do the actual work.