Les dejo el link de los nuevos documentos agregados a la librería de descarga de Exchange 2007:
Configuring Permissions in Exchange Server 2007
Operations Management and Monitoring of an Exchange Server 2007 Organization
Managing Mailbox Features in Exchange Server 2007
Management Interfaces in Exchange Server 2007
Technical Architecture of Exchange Server 2007
Exchange Server 2007 Planning
Carlos Salina | Microsoft MVP Exchange