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Create a Subdomain for an Exchange Alias

bloodsplat
bloodsplat asked
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Last Modified: 2012-06-21
I have a customer who requested if they can have a different 'alias' for their Email Address.  Example would be our domain is called "xmen.com" and they would like their email address to either be "xfactor.com" or "xfactor.xmen.com".

The environment is Windows Enterprise Server 2003 Domain hosting Exchange 2003 Services.  We have BIND as our 'authoriative' DNS with AD DNS as a backup.

Internally we can add any alias's we want and users can send/receive email.  The issue we have is when they send email outside our domain as we receive kickbacks from emails unable to send.

We want to ensure that when the users send email from their accounts the distant end sees their email address as "xfactor.xmen.com" and not "xmen.com".  There is not a registered namespace for "xfactor.xmen.com" only "xmen.com".  Is there anyway we are able to set up DNS and Exchange appropriate to meet this requirement without creating a whole new domain and a registered namespace?  Thanks.
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