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.
One of the first things my customers notice when I demonstrate Exchange Server 2010 management to them is that mailboxes are no longer created or managed in the Active Directory Users & Computers console.
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.