How to Create a CatchAll Mailbox in Exchange 2007 (CatchAllAgent)
CatchAllAgent is an Exchange 2007 Transport Protocol Agent. If a message comes in, and a
recipient of that message does not exist (unknown recipient), the recipient typically gets
rejected by the Recipient Filtering feature (which is also a Transport Protocol Agent).
The CatchAllAgent can be configured to rewrite the recipient address for unknown recipients
such that such messages end [...]


