Additionally, clients receive one of the following error messages when they try to log on to Exchange Server 2007, depending on whether they use Outlook or Outlook Web Access.
Outlook
Unable to open your default e-mail folder. The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server computer is down for maintenance.
Outlook Web Access could not find a mailbox for DOMAIN\USER. If the problem
continues, contact technical support for your organization and tell them the
following: The mailbox may be stored on a Microsoft Exchange 2000 or Microsoft
Exchange Server 2003, or the Active Directory user account was created recently and
has not yet replicated to the Active Directory site where this Client Access server
is hosted.
Additionally, if you move the mailbox from Exchange Server 2003 to Exchange Server 2007, you receive the following error message:
-1056749241
- Hub Transport
- Client Access Server
- Mailbox