My company is moving from Exchange 2003 to Exchange 2010. We have one back-end Exchange 2003 server, and two Exchange 2010 servers. I have setup a DAG using the 2010 servers. I have also setup a CAS array, and am using hardware load balancers.
If I either create a new Exchange 2010 mailbox, or move an existing mailbox from Exchange 2003, when using a Windows 7 client logged on as the associated user, I can successfully configure and open the mailbox in Outlook 2007. However, when I am logged onto our Windows 2003 Terminal Server as the same user, I get the message "Outlook cannot log on. Verify you are connected to the network and using the proper server and mailbox name. The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action." If I can get past this point, I get a message saying "Microsoft Exchange is unavailable".
In addition, even though I should have full access to all mailboxes, when I add an Exchange 2010 mailbox as a secondary mailbox to my Outlook profile, I get "Cannot display the folder". If I create a new Outlook profile to make the Exchange 2010 mailbox a primary mailbox, I am repeatedly asked to enter credentials, and cannot open the mailbox.
Any help would be much appreciated.