When trying to create new user accounts the account is created, however the exchange account isn't created. This is the message received when you run the wizard.
Active Directory operation failed on server.domain.local. This error could have been caused by user input or by the Active Directory server being unavailable. Please retry at a later time. Additional information: Additional information: The global catalog verification failed. The global catalog is not available or does not support the operation. Some part of the directory is currently not available.
Active directory response: 000020E1: SvcErr: DSID-0320062F, problem 5002 (UNAVAILABLE), data 0
The server is unavailable.
Exchange Management Shell command attempted:
Enable-Mailbox -Identity domain.local/MyBusiness/Users/SBSUsers/test test' -Alias 'test' -Database 'server\First Storage Group\Mailbox Database'
Elapsed Time: 00:00:42