Introduction Postfix has several hundred configuration parameters that are controlled via the main.cf file. Fortunately, all parameters have sensible default values. In many cases, you need to configure only two or three parameters before you can start to play with the mail system. Heres a quick introduction to the syntax: - Postfix configuration files The text below assumes that you already have Postfix installed on the system, either by compiling the source code yourself (as described in the INSTALLfile) or by installing an already compiled version. 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 STANDARD_CONFIGURATION_README file. But dont go there until you already have covered the material presented below.
Firewall This is a method of security on networks, where all traveling data is scrutinized and is then either accepted or blocked, depending on a set of rules.
