A quick introduction to Exchange transport

Exchange 2007 transformed message transport by introducing the Hub Transport role as a central nexus for all messages. Every message sent or received in an Exchange 2007 or Exchange 2010 organization is guaranteed to pass through at least one hub transport server, and every message in an Exchange 2013 server is likewise guaranteed to pass through the transport components on at least one Mailbox server. This guarantee means that Exchange can ensure that several valuable actions take place:

  • All messages are consistently processed according to whatever policies are currently in place. These policies can include both inbound and outbound filtering, the application of data loss prevention policies, or the application ...

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