A customers IT department wants to point their domain to a site I've created for them which is hosted on a share GoDaddy account. It's not my primary domain but is a site in a sub directory of its own.  He wants to do a A NAME change at his end and has requested my IP.However I'm guessing that with a shared IP that the IP alone won't make the redirect work correctly.  It's important that their original domain address appears in the browser bar once the redirect takes place.  Do I need to do some king of mapping to guarantee that his redirect finds the correct content in the sub folder?
Domain redirect to go daddy shared ip account via IP through an A NAME change
redirects;dns;ip address;godaddy;cname