We have recently migrated from Exchange 2003 to 2010 and have got a problem with only the domain administrator account logging on to its email account via OWA. After putting correct info in and clicking logon we get the message below. Mailbox Features shows OWA enabled so puzzled.
The Active Directory resource couldn't be accessed. This may be because the Active Directory object doesn't exist or the object has become corrupted, or because you don't have the correct permissions.