As an alternative suggestion… I’ve been using Tuffmail http://www.tuffmail.com/ as my email host for my domain for a couple of years and have been very pleased. Several friends recommended them to me.
The service is not free — you pay more depending on the number of accounts and amount of storage you want, but it’s extremely configurable (more so than I need or understand) and, so far, has been rock solid, with awesome spam filtering. I like to think that because it’s the only thing the company does, they’re very good at it. They have web mail clients so you can check your mail online too.
Commenting is turned off on this blog.