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I have an Exchange mail server &quot;owa.domain.com&quot; that is accessible via the web with the External IP address for the mail server. &nbsp; &nbsp; I also want the Internal users to also access the mail server by that name also. &nbsp; &nbsp;So how to I set it up properly on my Internal DNS service. &nbsp; &nbsp;
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I have an Exchange mail server "owa.domain.com" that is accessible via the web with the External IP address for the mail server.     I also want the Internal users to also access the mail server by that name also.    So how to I set it up properly on my Internal DNS service.    

How do you setup a external Exchange mail server address in the internal DNS?

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.