Using Postfix and Dovecot to serve e-mails across virtual domains

In this recipe we will learn how to configure Postfix and Dovecot to serve e-mails across virtual domains.

It is not unusual to find a single mail server serving one or more domains. In fact you could say it is common place and it is the purpose of this recipe to show you how to set up and configure virtual domains for your existing users in order to enhance the functionality of your local mail server.

Getting ready

To complete this recipe you will require a working installation of the CentOS 6 operating system with root privileges and a console based text editor of your choice. It is expected that your server will be using a static IP address running both Postfix and Dovecot with SASL, that maintains one or more system user accounts; and all the virtual domains are supported by a working DNS configuration. It is also assumed that you are working through this chapter, recipe by recipe in the order that they appear.

If you are...