I have an exchange server 2003 running in Windows 2003. I have an unnamed program that listened for incoming mail, signs it with DKIM and then should relay it back to the Exchange server.
I am a little lost on how to configure the SMTP in exchange 2003 system manager to relay sent mail through the proxy and then listen for it to come back signed. Once that is complete it is to send the mail to the specified address.
I know it involved relay and possibly connectors but the exact steps have eluded me.
Lets assume the proxy works perfect I just want to know how to relay to a specified IP and port then listen on another port when it comes back and then send it out.