I need to configure TLS to Postiti for email bound for the Internet. I have three (3) exchange 2003 standard servers. Two are database servers and one is a front-end server. Only one (1) database server is the bridgehead server. Currently all email goes out unencrypted, is routed through Postini for filtering and content inspection, and delivered.
Outbound email is being send via two SMPT connectors, SharePoint Connector and SMTP Out connector. One (1) is for email transmission to a server running SharePoint with plain old SMTP services. This connector looks at the address space sps.<mydomain>.local. The other connector's address space is "*" and sends all other email to a Postini server via a SmartHost.
Can anyone give me some guidance to help me figure out how/where to setup TLS so that it's only used for outbound email to the Internet and not used for any internal MAPI clients or internal email to sps.<mydomain>.local.