Management Pack de Exchange Server 2007 para SCOM fue libreado
Les dejo el link
Microsoft Exchange Server 2007 Management Pack for System Center Operations Manager 2007
http://www.microsoft.com/downloads/details.aspx?familyid=1a83e112-8677-4e03-83c3-f1b7ebfc3a4b&displaylang=en&tm
Saludos
Carlos Dinapoli
Microsoft Exchange MVP