Here's the scenario:
We utilize a 3rd party secure email delivery service that stores emails for secure retrieval by our clients. Only one address "firstname.lastname@example.org" sends to this service. We originally set it up when we had Exchange 2003 and had to configure it so all system-generated email from this address was directed to an internal Windows 2003 (non-exchange) SMTP relay server which relayed all mail to the service. The service is configured to redirect all email for our internal domain back to our 2003 Exchange server for delivery.
We now have Exchange 2010 and I would like to eliminate the email service from the equation for all internal email addresses.
Is it a send connector that I need? How do I configure it so that the smtp relay on our exchange 2010 sends all email from a specific address to an external relay except for addresses in our internal domain?