Actually, the iPhone *claims* to do Exchange. However it actually relies on the Exchange server having IMAP enabled if you're trying to sync over the air. My company considers this a security risk so it isn't supported (I pretty much trust our IT dept on that one, but I'm sure someone can clarify how true it is) - in any case, it isn't proper Exchange.
As for the Outlook plug-in to sync via a data cable, apparently this is incompatible with our MAPI configuration. Don't know how plausible that is (and haven't tried it, not having an iPhone)
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@ Andy Taylor
Actually, the iPhone *claims* to do Exchange. However it actually relies on the Exchange server having IMAP enabled if you're trying to sync over the air. My company considers this a security risk so it isn't supported (I pretty much trust our IT dept on that one, but I'm sure someone can clarify how true it is) - in any case, it isn't proper Exchange.
As for the Outlook plug-in to sync via a data cable, apparently this is incompatible with our MAPI configuration. Don't know how plausible that is (and haven't tried it, not having an iPhone)