I signed up a while ago for beta testing a new service using Gmail with my domain. It is really cool, and was pretty simple to set up. I can set up up to 25 users (email accounts) for free using gmail as the host. They have a kunefke.us address, but it is hosted on Google’s servers.
The really cool thing about this is that there is no procedure to set it up on each individual computer. I just have to give them a link to the sign-in page, and they keep up with the link.
In fact, I’ll give it to you right HERE. If you want an account, shoot me an email by clicking HERE