Our organization just upgraded its Exchange server from 2003 to Exchange 2010. Since the upgrade, I can't get Outlook 2007 to connect to it as an Exchange client. I have tried this on 2 different VM's and both fail the same way. When I try to use the AutoDiscover feature of 2010, it will intermittently create an IMAP account rather than Exchange. This isn't acceptable since the Calendar functions don't work in IMAP. Any ideas why this is happening and how to fix it?
Thanks!