Linux Mail Server Setup and Howto Guide

Virtual Network Computing (VNC) is a graphical desktop sharing system which enables you to remotely control another computer. This page will show you how to setup VNC server to remotely manage your Linux machine.

Secure Shell (SSH) is a network protocol that allows data to be exchanged using a secure channel between two computers. SSH is typically used to log into a remote machine and execute commands, but it also supports tunneling, forwarding arbitrary TCP ports and X11 connections; it can transfer files using the associated SFTP or SCP protocols. This page will show you how to setup SSH to remotely administer a Linux box.

These are the collection of Postfix howtos available on this site. Red bullets means a better solution exists and the information has been retained for reference only.

Postfix does not support mailbox quota. But thanks to Anderson Nadal’s Postfix Virtual Delivery Agent (VDA) patches, it can. To use the Postfix VDA requires two things, first Postfix must be built with the VDA patches and second, virtual user accounts must be used. You can get the Postfix RPM with VDA patches here.

This page will show you how to setup an LDAP address book using OpenLDAP, an open source implementation of the Lightweight Directory Access Protocol.

Postfix uses the file /etc/aliases to map an alias email address to any number of real email addresses. This page will show you how to use this file to specify a mailing list address or a proxy address for use in Postfix.

Below are custom built Postfix RPM packages configured with enough options to support all the Postfix features described on this website. These packages are provided to save you time from building your own. The Postfix features enabled in these builds are LDAP, TLS, MySQL, SASL 2 and VDA.

SMTP Authentication (SMTP Auth) provides an access control mechanism that can be used to allow legitimate users to relay mail while denying relay service to unauthorized users, such as spammers.

The Postfix Cyrus SASL support is used to authenticate remote SMTP clients to the Postfix SMTP server. Thanks to the Pluggable Authentication Modules (PAM) in Linux, we can configure Cyrus SASL to delegate the authentication process to an Active Directory server.

LDAP authentication is available in Dovecot starting version 1.0. Since Active Directory is an implementation of LDAP directory services, we can use the LDAP authentication to authenticate Dovecot against an Active Directory server. But for users of Dovecot prior to 1.0 or those having problems with LDAP authentication, we can instead use the Kerberos authentication mechanism in Windows via the Linux PAM.