I want to replace Win XP on a computer with Ubuntu. Do I have to buy a domain name to get email to send/receive and get internet working? Because on my Ubuntu 14.04 at work, I had to buy a domain name to get a Mail Transfer Agent to receive and send email. I"m not sure if an email client (not the same as an MTA) has the same requirements.
(At work I got around this with a Perl program which talks directly to the SMTP server, because I only needed to send emails. On my old Win XP PC I need to run a regular email client to send and receive emails.)
Also, is it possible to use a dynamic IP with Ubuntu with an ISP like Comcast? If so, how would I set it up?