Postfix Utility Programs

Besides the Postfix core programs, there are several utilities that are used by Postfix processes and local Postfix users to help manipulate and transfer messages. Table 23-3 shows the different Postfix utilities available on a Postfix system.

Table 23-3: Postfix Utility Programs

Program

Description

mailq

Checks the Postfix mail queues for messages and displays the results

postfix

Controls starting, stopping, and reloading the Postfix system

postalias

Creates, updates, or queries the Postfix alias database

postcat

Displays the contents of Postfix queue files

postconf

Displays and modifies parameter entries in the main.cf configuration file

postkick

Sends command requests to running Postfix services

postlock

Locks specified Postfix files and executes a specified command

postlog

Logs a message to the system-logging facility using Postfix-style log messages

postmap

Creates or queries a Postfix lookup table

postsuper

Performs maintenance on specified Postfix queue directories

Each Postfix utility program plays a different role in either processing mail messages or querying the Postfix system for status information. Some of the utilities are utilized by Postfix core programs to process mail, while others can be used by the Postfix administrator to manipulate messages and obtain statistics about the running system.

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