Managing Mailbox Databases
Microsoft Exchange Server 2007 will reach end of support on April 11, 2017. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
Applies to: Exchange Server 2007, Exchange Server 2007 SP1, Exchange Server 2007 SP2, Exchange Server 2007 SP3
Topic Last Modified: 2009-03-17
A mailbox database is a database for storing mailboxes. The mailbox database manages the data in mailboxes, tracks deleted messages and mailbox sizes, and assists in message transfers. A mailbox database is stored as an Exchange database (.edb) file.
This topic lists the management tasks that you can perform for mailbox databases, and includes links to topics that will help you complete the tasks. Unless otherwise noted, these tasks can be performed by using the Exchange Management Console or by running commands and scripts in the Exchange Management Shell:
If you want to use the Exchange Management Console for this task, the New Mailbox Database wizard will guide you through the process of creating the mailbox database. If you want to use the Exchange Management Shell, use the New-MailboxDatabase cmdlet.
If you want to use the Exchange Management Console to remove a mailbox database, select the database, and then click Remove in the action pane. If you want to use the Exchange Management Shell, use the Remove-MailboxDatabase cmdlet.
If you want to use the Exchange Management Console to view mailbox database statistics, select the database, and then click Properties in the action pane. If you want to use the Exchange Management Shell, use the Get-LogonStatistics cmdlet.
Duplicate messages may occur in Exchange 2007 when a message is sent to a user and to a distribution list that includes the same user. Typically, a duplicate message occurs if the distribution list is expanded on a server other than the Exchange server from which the message was sent. This topic describes how to control the way in which duplicate e-mail messages are detected in Exchange Server 2007.