I've looked at WSP and was wondering if there are any other solutions for setting up hosted exchange to resell?
closed as not constructive by WesleyDavid, Iain♦, RobM, Ben Pilbrow, Scott Pack Feb 19 '11 at 13:52
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If by WSP you mean Website Panel, I can tell you that the 3 most popular control panel vendors in the Exchange hosted space are ExtendASP, Parallels, and Ensim. Equally popular for larger hosting companies is to write their own. The hosted Exchange space is heavily overloaded right now; most smaller outfits looking to host are wisely choosing to use a white label service instead of building their own.