Credentials fail for exchange2010 backup
I have setup a new exchange2010 and want to backup using BE2012.
As far as I can tell the account used to connect to the exchnage has the right permissions.
I have run the BE support tool and it confirms that my account is appropriately configured to backup/restore exchange.
I can log onto the exchange server and administer exchange using the account.
but when I run a test of my backup job i get the error
"\\EXCHANGE.mydomain\Microsoft Information Store\Mailbox Database xxxxxxxx Check status : Error: e000ff21, The job failed with the following error:
Backup Exec was unable to obtain configuration information from the Exchange Server. Review the credentials to ensure that it has the Exchange Organization Administrator role and sufficient rights."
Please can anyone advise what I can check next?