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Moving a little more description from lab 4b to here.
==OVERVIEW & PREPARATION==
You may not be aware of it as an user, but email is a very <u>complex</u> system to administer. In fact, the more modern e-mail systems (eg. web-based mail applications, etc) are more technically involved than the other archaic, hard-to-configure, and sometimes inter-operable mail systems.
We are going to spread the remaining email labs over a few weeks, so that by the end of this topic, you will have a sufficient understanding of what services are involved in sending, filtering, and reading email. You will also have the skills to configure a basic mail setup using the default services provided for your Centos7 Linux distribution.
This is a simple (yeah, really!) diagram of how you can send an email to someone else:
[[Image:Email-servers.png]]
This lab will show you how to set up a Mail User Agent ('''MUA'''), using the mailx package on your '''vm2''' machine, to allow users of that VM to use a locally installed Mail Transfer Agent ('''MTA''') to send and receive e-mails. You will also be able to send a text-based e-mail from your '''vm2 machine''' to your '''Seneca mail account'''. You will also learn how to make multiple MTAs in the same network collaborate in sending emails. In addition, you will learn where the message store (MS) is located that stores mail messages until they are viewed and either deleted or transferred to other folders.
