In the following article we will guide you through the steps of installing and configuring a simple mail server using Sendmail and Dovecot on a Fedora 20 Linux VPS.
What is Sendmail?
It is a general purpose email routing facility that supports many kinds of mail-transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet.
SpamAssassin is an Open Source mail filter, written in Perl, used for e-mail spam filtering based on content-matching rules. It can be used on a wide variety of email systems including sendmail.
The objective of this guide is to enable Sendmail’s virtual user table, which allows us to configure user-specific and domain-wide email aliases for multiple domains. These instructions assume you are using a CentOS virtual server.