Creating an Active Directory Site for Exchange Server
Creating an Active Directory Site for Exchange Server is a document from Microsoft IT with detailed discussion and procedures on how they created a dedicated Active Directory services site to optimize the performance of Exchange Server 2003. The document was originally published on December 2004 and has been recently updated.
"Heavy messaging load within Microsoft requires high performing and highly available Active Directory servers to help satisfy the service level agreements (SLAs) for mailbox servers, public folder servers, Simple Mail Transport Protocol (SMTP) and routing group bridgehead servers, and Exchange front-end servers. Microsoft IT outlines steps for creating a dedicated Active Directory site for large enterprise data centers where Exchange data is located."