I wouldn't want to depend on Comcast for my email to be delivered to its final server. So if you have to roll your own, I'd do it out on a VPS. Linode, for exa

I wouldn't want to depend on Comcast for my email to be delivered to its final server. So if you have to roll your own, I'd do it out on a VPS. Linode, for example, has upgraded me in memory, space and bandwidth at least twice, and recently did a hardware upgrade. Not that you have to go with Linode specifically, just, when will you ever give yourself a free upgrade on your home hardware?