Article ID: 2387770 - View products that this article applies to.
When using autodiscover to connect to an Exchange 2010 SP1 mailbox, an Outlook client may present one or both of the following error messages repeatedly:
Unable to open your default e-mail folders. The Microsoft Exchange Server computer is not available.
Microsoft Exchange administrator has made a change that requires you quit and restart Outlook.
The following should also be true:
Note: The domains do not match.
When a mailbox is being moved across different Exchange forests, the mailbox enabled user in the original forest is converted to a mail enabled user. If that mailbox is also enabled for personal Archive, one of attributes that the original forest object (a mail enabled user) can have is called msExchArchiveDatabaseLink. If present on the mail enabled user, the attribute will likely point to a database in the "wrong" forest - as the user's mailbox is now in the forest where it was newly moved.
The conflicting information will then confuse an Outlook client during the Autodiscover process, causing it to report errors as mentioned above.
Microsoft Exchange 2010 SP1 cross forest move will not create this problem, as the attribute will be cleared properly during the mailbox move.
If you have moved archive-enabled mailboxes cross forest prior to installing Microsoft Exchange 2010 SP1, we recommend that you clear the value of the msExchArchiveDatabaseLink attribute on any mail enabled users that might have them populated. You can use a tool such as ADSIEdit to remove the value of this attribute.
To Run the Test e-mail Auto Configuration test:
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.