Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-08-13

After you install the Hub Transport server role on a Microsoft Exchange Server 2007 computer, you must manually create Send connectors and Receive connectors to establish mail flow between your organization and the Internet. By default, no Send connectors are created on Hub Transport server. Also, the default Receive connector named "Default Server Name" that is created on all Hub Transport servers to listen for incoming connections on port 25 doesn't accept anonymous connections.

Before you configure new connectors, you should understand that internal mail flow between Hub Transport servers in the Exchange 2007 organization is automatically handled by the following connectors:

The Send connectors and Receive connectors that are required to establish Internet mail flow depend on how your Exchange organization connects to the Internet. The following list describes possible scenarios and provides links to supporting documentation:

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