I'm testing a hosted mail provider alongside our internal Exchange 2010 infrastructure. I created a sub domain called test.mycompany.com to handle mail for the hosted service. The problem is that my DNS provider doesn't support mx records for subdomains. Since no external network needs to know the mail server for this subdomain at this point, I've decided to just host the mx records for the subdomain on our internal DNS and set up a mail enabled contact and forward all e-mails to test users to test.mycompany.com.
This should work fine, but I ran into a brick wall--we're using an external smart host through a third party provider. I wonder if there's a setting or transport rule where I can have a setting that directs all e-mail to go through the smarthost except for mails destined for test.mycompany.com. Is this possible?
