I had install a BES Server , Which required to assign Send-As on a OU. but it popped with a Error
Active Directory operation failed on CloudDC1.exchangecloud.com.au. This error is not retriable. Additional
information: Access is denied.
Active directory response: 00000005: SecErr: DSID-031521E1, problem 4003 (INSUFF_ACCESS_RIGHTS), data 0
+ CategoryInfo : WriteError: (0:Int32) [Add-ADPermission], ADOperationException
+ FullyQualifiedErrorId : [Server=CLOUDEXCH1,RequestId=f708878a-1736-4169-be6d-aa6743ed8137,TimeStamp=25/11/2013 1
1:00:37 AM] 90534657,Microsoft.Exchange.Management.RecipientTasks.AddADPermission
+ PSComputerName : cloudexch1.exchangecloud.com.au
Please Create a Test OU . and test it.
Open Active Directory Users and Computers
Properties of OU – Click on Exchange Trusted Subsystems – Give Full Control – Apply OK
That should solve it .