Exchange Server 2007 is tightly integrated with the Windows Server 2003 Active Directory service. Integration with Windows Server 2003 provides several benefits, including the following:
Centralized object management. Administration is unified for Exchange Server 2007 and Windows Server 2003. Directory objects can be managed from one location, with one management tool, and by one team.
Simplified security management. Exchange Server 2007 uses the security features of Windows Server 2003, such as the discretionary access control list (DACL). Changes to security principles (such as user or group accounts) apply to data stored in both Exchange Server 2007 and Windows Server 2003 file shares.
Simplified creation ...