Scenario: You want to clean up rights in Exchange, but you want to verify if a specific account has any elevated/administrative Exchange privilege.
Solution: Run the following command line via Exchange PowerShell:
get-managementroleassignment -roleassignee steve
The results will give you all permissions via role in Exchange. If its a standard mailbox with no elevated permissions, you will see a bunch of Default Roles for the RoleAssigneeName. Any elevated privilege will also be listed as well.