How do I go about transitioning to a new email domain name?

Here is my scenario:

Currently, we have a domain, let's call it XXXX.  All of our email addresses however, are  We'd like to transition our email addresses to  The domain will stay the same (XXXX), just the email suffix will change.  However, we'd also like to keep active for the external world who will obviously still be sending to

Is this just adding a new entry into the default recipient policy in Exchange?  Making the primary, but still keeping checked?  Any advice would be much appreciated!
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Toni UranjekConsultant/TrainerCommented:
Hi mcascio,

Create appropriate MX record for new domain and configure Exchange to recieve mail for multiple domains.

"Configuring Exchange to receive mail for multiple domains"



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Rajith EnchiparambilOffice 365 & Exchange ArchitectCommented:
"""Is this just adding a new entry into the default recipient policy in Exchange?  Making the primary, but still keeping checked?"""""

That is correct. Exactly what you need to do. You can create a new email address policy instead of editing the default one.
mcascioAuthor Commented:
thanks for the replies!
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