“Management Pack for Exchange Server 2007 for MOM 2005” is now available for download. You will not find it in the regular Management Pack Catalog. You can download it here here

The Exchange Server 2007 Management Pack includes rules and scripts to monitor and report on performance, availability, and reliability of all Exchange 2007 server roles including Mailbox, Client Access, Hub Transport, Edge Transport and Unified Messaging.
The Exchange Server 2007 Management Pack for MOM 2005 topics explain how to monitor and maintain messaging resources.

System Requirements

• Supported Operating Systems: Windows Server 2003 R2 x64 editions; Windows Server 2003 x64 editions
• Requires Microsoft Operations Manager 2005 and Microsoft Exchange Server 2007