Route mail to an external SMTP server

Can someone point me in the direction of the steps I need to go through to make a domino server route mail straight out to the internet and accept mail from the internet? I have the task of making a domino server stand-alone as opposed to routing it’s mail through a primary SMTP enabled domino server. I’m dealing with the MX records so that mail goes straight to the server but am unsure as to the actual steps involved in making the server function on it’s own.