Exchange Server 2003 allows the use of front-end servers, which accept incoming client requests for information and then forward those requests to back-end servers, which actually hold user information. This lets you balance the load between servers and provide a single namespace from your client ‚ s perspective.
backfill
The process used in public folder replication to fill in messaging data that is missing from a replica.
Bad Mail folder
The folder in which SMTP stores undeliverable messages that cannot be returned to the sender.
Basic (Clear-Text) authentication
Requires the user to submit a valid Windows username and password. The username and password are sent across the network as unencrypted clear text.
Basic over Secure Sockets Layer (SSL) authentication
Extends the Basic (Clear-Text) authentication method by allowing an SSL server to encrypt the username and password before they are sent across the network.
bridgehead server
A server within one bounded area, such as a routing group , that is designated to deliver data or messages to another area.