Mail Security does not refresh the Active Directory group cache when you create or edit a content filtering rule. Mail Security automatically updates the cache upon startup and at 1:00 A.M. in the time zone to which your computer clock is set. You should manually update the cache if you modify the users in an Active Directory group that is used in a content filtering rule. You should also manually update the cache if you create a content filtering rule that applies to the Active Directory group Executives.
This feature is not available for the Edge Server role.
For example, you create a content filtering rule that applies to the Active Directory group Executives and deploy your changes. Then you add a user to the Executives group. After you deploy your changes, you should update the Active Directory group cache so that the rule applies to the user that you added to the group.
You must have access to Active Directory or be logged onto a client in the Active Directory domain to update the Active Directory group cache.
To refresh the Active Directory group cache
In the console on the primary navigation bar, click Policies.
In the sidebar under Content Enforcement, click Content Filtering Rules.
In the sidebar under Tasks, click Update Active Directory groups cache now.
In the Operation Status window, click Close when the operation is complete.