I used to work at RPI...the college...haha. As for setting up a home grown email server, you will run into loads of issues in this age of Spam crackdown. I've had ten kinds of hell getting the forum and website to properly email (and still haven't managed it flawlessly) using a self hosted MTA. I'm no email guru, but I've run into trouble several times with smtp servers (one of which was in the lab I worked in at RPI) after they started cracking down on spam. You may get a lot of rejections sending from your home box if you can get it to work at all. You can, however, get your bodhilinux.com email address working easily in Thunderbird using identities as I linked in my earlier post. Sadly, I can't figure out how to get it to work on my phone using the Samsung email client. If I wasn't so lazy, I'd try a different client.