After you create the Exchange Mailbox client, must associate mailboxes with the subclient.
Before You Begin
Create the Exchange policies.
Procedure
- 
From the CommCell Console, expand Client Computers > client > agent > User Mailbox.
 - 
At the bottom of the right pane, click the Mailboxes tab.
 - 
From the CommCell Console, right-click within the right pane, and then click New Association > User.
The Create New Association dialog box appears.
 - 
Click Configure.
The Configure Mailboxes dialog box appears.
 - 
Click Discover.
A message appears that asks you if you want to continue.
 - 
Click Yes.
The message appears that tells you to check back in a few minutes.
 - 
Click OK, and then click Discover.
A message appears to confirm the request.
 - 
Click Yes.
A list of available mailboxes appears. If a mailbox is already associated with the subclient, it appears in a gray, italic font.
 - 
If you want to discover mailboxes from the most recent version of the database, clear the Perform discover operation in cached mode check box, and then click Discover.
A message appears to confirm the request.
 - 
Click Yes.
A message appears that tells you that the cache is being refreshed in the background and that you must check back later.
 - 
Click OK, and then click Discover.
 - 
Select all the required mailboxes, and then click OK.
The selected mailboxes appear in the list on the Content tab.
 - 
Click the Policies tab.
 - 
Select the Exchange policies that will be applied to all of the mailboxes within the subclient.
 - 
Click OK.
All the mailboxes that you associated with the subclient appear in the right pane.