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

Title: How to Send Delivery Reports to Group Owner in Microsoft Exchange Server 2003

Objective: The objective of this demo/tutorial is to teach you how to send delivery reports to group owner in Microsoft Exchange Server 2003. When a message sent to a group is not delivered, you can specify that delivery reports be sent to a group owner. The delivery report lets the group owner know that the message was not delivered.

If you are a subscriber, then click the Demos link in the navigation menu to view the complete list of demos.