In the Exchange Management Console when a mailbox is selected the actions pane shows two tasks; Disable and Remove. These two tasks are often misunderstood by new Exchange administrators.
Exchange 2010 FAQ: What is the Difference Between Disabling and Removing a Mailbox
Exchange 2010 FAQ: Why Can’t I Manage Mailboxes in AD Users & Computers Any More?
Exchange 2010 Certificate Revocation Checks and Proxy Settings

The Microsoft Exchange Team blog posted about an issue people are experiencing in the field in which certificate revocation status check failures prevent you from assigning a certificate to any Exchange services. Here I demonstrate how to use proxy settings to work around the problem in some scenarios.




