Linux Mail Server Setup and Howto Guide

Ideally, passwords should be changed regularly. This article describes how to setup password expiration using the User Manager application in Red Hat Enterprise Linux 5 or CentOS 5.

This article contains useful links on how to administer a Red Hat Enterprise Linux 5 or CentOS 5 server.

If you are using Linux system accounts as your mail accounts, you can install the change_passwd plugin to enable SquirrelMail to provide a password change utility using the background service poppassd to reliably and securely change a user’s password.

Poppassd is a service that changes system passwords. This article describes how to setup poppassd in Red Hat Enterprise Linux 5 or CentOS 5.

This article describes how to configure a vacation autoresponder in Postfix mail server so email senders can be informed when the recipient is not available.

The SquirrelMail Postfix Admin Plugin will allow your users to change their Vacation, Password and Forwarding settings if you are using Postfix Admin to administer your Postfix mail server. If you are not using Postfix Admin, you can still install and use it along with this plugin to use its vacation notification feature.

RPMforge is a third party RPM repository for Red Hat Enterprise Linux or CentOS. Adding the RPMforge repository will give you access to an extensive library of precompiled binaries. This article describes how to add the RPMforge repository in Red Hat Enterprise Linux or CentOS 5.

The SquirrelMail Retrieve User Data plugin retrieves a user’s name and e-mail address from a configurable source like LDAP, MySQL, Linux system accounts and other sources. Users do not need to configure Squirrelmail before writing their first mail.

An LDAP server like the 389 Directory Server and OpenLDAP can be used to centralize the users and authentication information. This articles describes how to use LDAP based authentication in Red Hat Enterprise Linux 5 or CentOS 5.

This article will show you how to configure Postfix and Dovecot to handle multiple domains stored in MySQL. Postfix Admin is used to manage the domains, mailboxes and aliases in MySQL. See How to Install Postfix Admin to setup the MySQL database that will be used by Postfix and Dovecot.