How to Change OWA Internet Domain Name

Our company has changed names from abc.com to xyz.com.  Currently, OWA is running on mail.abc.com.  I have mail.xyz.com redirecting to mail.abc.com and everything is working fine that way.  However, the user still sees mail.abc.com in the url field after the redirect.  The company would like to remove all traces of abc.com as being visible in the url field.  Could someone please tell me how to change the OWA internet dns name so that all traces of abc.com are gone without changing the internal active directory domain name?  Thanks!!
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craigothyAsked:
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AkhaterCommented:
just go the the dns of xyz.com and create an A record say mail.xyz.com pointing to the IP of mail.abc.com

that should be it

do you have TMG/ISA or a firewall ?

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Satya PathakLead Technical ConsultantCommented:
tigermattCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
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