A couple of days ago I was discussing Outlook 2003 issues we face when the mailbox is on a Exchange 2010 Server. The obvious solution that I was offering was ask customer to upgrade to Outlook 2007/2010, a logical move since Outlook 2010 gives you the best experience if you are on Exchange 2010 BUT the customer partner was not convinced and wanted some solution, well I could only refer them to this link
Today Microsoft has announced that UDP Notification Support is being re-added to Exchange 2010 with the release of Exchange Server 2010 Service Pack 1 Roll-Up 3 (SP1 RU3) sometime in March 2011 great news for customers like above.
Am I happy? well to some extent only 🙂