Supporting Messaging Clients

Front-End/Back-End Architecture


In previous versions of Exchange, the information store managed the databases and the client access protocols such as IMAP4, POP3, MAPI , and Network News Transfer Protocol (NNTP). In Exchange 2000, the Internet access protocols have been removed from the store and instead are managed by Internet Information Services (IIS). Deploying a front-end/back-end configuration makes it possible to manage the Internet access protocols on a server that is separate from the one on which the store and databases run. Essentially, a bank of protocol servers handle the incoming client connections while the store servers are dedicated to running the databases.

Benefits of Front-End/Back-End Architecture

The main benefits of a front-end/back-end configuration are a unified namespace and reduced overhead for Secure Sockets Layer (SSL) encryption.