Microsoft recently announced they were re-adding a feature to Exchange Server 2010 to allow what to work again?
ANSWER: Outlook 2003 in online mode. Previously only cached mode worked and even then it had “non-normal” issues. From the Microsoft Exchange Team Blog. This will be added to Exchange Server 2010 Service Pack 1 Roll-Up 3 (SP1 RU3). Per the posting, “As a result, we have adjusted the RU3 schedule in order to complete the engineering work required to include UDP support within the rollup, which we now expect to release in March.”