Chapter 1. Linux and E-Mail Basics

If you are one of those thousands of system administrators who manage the networks and computers of small to medium-sized companies thinking of hosting their own e-mail service, this book is for you.

We will start with the most basic components of an e-mail system. Together they will allow your users to receive mail from each other and from other people on the Internet, and send messages to whomever they want. This might be all you need, but many companies also want to provide their users with an accessible webmail service that people can use from home or when they are on the road. Another feature that many people unfortunately cannot be without today is proper protection against viruses spread via e-mail as well as filtering of spam messages.