Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-04-11

Understanding how the Microsoft Exchange Transport service selects certificates for Transport Layer Security (TLS) helps when you troubleshoot Domain Security and mail flow between Hub Transport servers and Edge Transport servers.

The following topics explain how certificates are selected for three TLS scenarios.