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.
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.
How to use the Exchange Management Shell to gather information about the mailboxes in your organization.
This Exchange Managment Shell tip will show you how to add new IP addresses to a Receive Connector in Exchange 2007 or 2010 without overwriting the existing remote IP range.
Your Exchange server will run for 120 days without a product key but you should enter one as soon as possible by following these steps.