you can try here: https://domains.live.com/default.aspx
they will give you something like hotmail but with your domain something like [email protected], and you will have all the advantages of msn the space, the bw and even they will work in msn so that's it, or you can try also google aps: http://www.google.com/a/, but is a little harder you will have to modify your mx entries to let google handle them, you will have 100 account's like gmail to give to your users, i hope this helps cya
