Exchange Administrator
When you assign a user or a group Exchange Administrator permissions, the user or the group can fully administer Exchange Server computer information. A user who has Exchange Administrator permissions has the following rights:
Organization Rights:
All permissions (except for Change permissions) on the MsExchConfiguration container (this object and its subcontainers).
Deny Receive-As permissions and Send-As permissions on the Organization container (this object and its subcontainers).
Administrative Group Rights:
Read, List object, and List contents permissions on the MsExchConfiguration container (this object only).
Read, List object, and List contents permissions on the Organization container (this object and its subcontainers).
All permissions (except for Change, Deny Send-As, and Deny Receive-As permissions) on the Administrator Group container (this object and its sub-containers).
All permissions (except for Change permissions) on the Connections container (this object and its subcontainers).
Read, List object, List contents, and Write properties permissions on the Offline Address Lists container (this object and its subcontainers).