Domain Alias

I wish to create a domain alias for email to be recieved by user_name@x.com and user_name@y.com and user_name@z.com, In my old email server it was as simple as creating an alias to the hosted domain. Any mail coming to any of those addresses would end up in the same physical mailbox on the server. ie there was only one mailbox per user no matter which domain name was used. I can't seem to find that set-up anywhere in the documentation. Server 2008 / Exchange 2007 / AD
i8yurdogAsked:
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tntmaxCommented:
have the additional 2 domains been setup as authoritative domains in the receive connector?
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aissimCommented:
Two step process, first you need to define the additional domain names as accepted/authoritative:
http://technet.microsoft.com/en-us/library/aa996910(EXCHG.80).aspx

Then you need to modify your e-mail address policy to include those domains:
http://technet.microsoft.com/en-us/library/bb201663(EXCHG.80).aspx
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Email Protocols

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