Unlike the '''mailx''' (MUA) application you installed and used in Lab 4a, this lab will be using the '''Thunderbird''' (MUA) application instead which is a graphical application that uses a '''centralized Message Store''' (MS) to retrieve and read mail messages.  Although we will be eventually setting up the Thunderbird application to perform all the mail operations discussed above, you need to learn to '''"walk before you can run"'''. Eventually, you are going to set up all those mail services, but to begin with, you will set up an email client to connect to a (hopefully) an already working server - which is the '''Seneca email server'''. This will be a good exercise with an Once we learn how to do this for our Seneca email clientaccount, then we can use it for our mail servers for our VM2 and VM3.