hosted microsoft exchange 2007 question...

[e-dub]

anyone know of any company that offers hosted 07 exchange service, but that lets me change the outgoing address like mail2web does. this is crucial to me, as my gmail address is all that i use, and i will keep it that way no matter what. i know i'll pay substantially more than the two dollars a month i pay now for mail2web, and that's ok.

thanks in advance!

eric b