[UPDATE] Anyone who is interested in working on the RPC over HTTP - iPhone idea together during iPhoneDevCamp ala MacHack style please let me know.  If you’re in the Louisville / Lexington area I’m looking at trying to have a satellite event during it or if not we could just work on the hack online.

Just an idea to the notion that the iPhone and Exchange will not mix well together and someone would still need to build it, but having a client sitting somewhere pulling stuff from your Exchange account via RPC over HTTP and then push that out to your iPhone might do the trick.

On the other hand Zimbra already supports both IMAP and CalDAV out of the box and will have some support for the iPhone.

We are all still gathering data on the device and we have been chatting with Apple. At a minimum, we will support IMAP and tethered sync via the Zimbra Connector for Apple iSync. Please post any good specs that you see on the device and we can look at other ways to sync to the device.

Take in consideration that they already support push email and over-the-air synchronization for most other mobile devices and have Apple as a strategic partner I would be surprised to not see the iPhone listed as a supported device later this year.

And remember remote wipe and direct push didn’t arrive in Exchange until SP2 for Exchange 2003 in mid to late 2005 and even when that did come out it still left some existing older phones out in the cold.