Assume that you have a mail-enabled security group in an Exchange Server 2010 Service Pack 1 (SP1) environment. You try to change the ManagedBy attribute of the group by using the Exchange Management Console (EMC). In this situation, you receive the following error message:
Note This issue does not occur in the release version of Exchange Server 2010.
You do not have sufficient permissions. This operation can only be performed by a manager of the group.