A new demo has been added in the Exchange Server 2003 demo portion.The detail of this demo is

Title: How to Configure Mailbox Manager for a Mailbox Recipient Policy in Microsoft Exchange Server 2003

Objective: The objective of this demo/tutorial is to teach you how to configure mailbox manager for a mailbox recipient policy in Microsoft Exchange Server 2003. After you have used filter rules to define the membership of your mailbox recipient policy, you need to define the criteria Mailbox Manager will look for when it processes recipient mailboxes, as well as what Mailbox Manager will do when it finds messages that exceed policy limits.

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