How to Remove an Object from the Control of a Policy
To change the properties on all the objects individually, you can also remove an object from the control of a policy or delete the policy itself. This procedure outlines how to remove an object from the control of a policy.
Note
After a policy has been applied, settings associated with that policy remain intact on associated objects, even after an object has been removed from policy control or a policy itself has been deleted. If you want to change the settings that a policy applies, you must change them on the individual server, mailbox store, or public folder store.
Procedure
To remove an object from the control of a policy
In Exchange System Manager, expand System Policies, and then click the appropriate system policy.
In the Policy Applied To column, right-click the object, point to All Tasks, and then click Remove from policy.