I just wanted to post my results with an HTC EVO 4 Andriod device.

The intial sync failed with "unable to contact server" even though it had already presented me with the SSL cert and "verified" the account.

However, I simply deleted the account and recreated it. This time rather than leave the "Domain" field blank I put in the name of the postoffice. But I suspect any thing would have worked.

Everything is sync'ing well. Calendar syncs with the included HTC calendar but not the native android calendar. Mail and Address book look good to.

Actually for a tech preview it has been working well all week and keeping in sync.

The only issue I have is that all emails come through as plain text...not sure if its the device or datasync.