<div>
one of them ( the internal ) used as name controller.<br />
both domain are pointing to same server and use same resources , users can login either internaal or external.<br />
<br />
Just one site.
</div>


one of them ( the internal ) used as name controller.
both domain are pointing to same server and use same resources , users can login either internaal or external.

Just one site.

<div>
So it's just the naming convention on exchange and the logon username...
</div>


So it's just the naming convention on exchange and the logon username...

<div>
so it's not a merge but a domain rename. <br />
<br />
depending on your domain level there's different ways of doing it.. <br />
<br />
<a href="http://technet.microsoft.com/en-us/library/cc738208(v=ws.10).aspx" rel="ugc">http://technet.microsoft.com/en-us/library/cc738208(v=ws.10).aspx</a><br />
<br />
but it really doesn't make a lot of sense of doing it if there is not a strong reason for it. <br />
(technically)
</div>


so it's not a merge but a domain rename.

depending on your domain level there's different ways of doing it..

http://technet.microsoft.com/en-us/library/cc738208(v=ws.10).aspx [http://technet.microsoft.com/en-us/library/cc738208(v=ws.10).aspx]

but it really doesn't make a lot of sense of doing it if there is not a strong reason for it.
(technically)

<div>
wot do u means by domain level ?
</div>


<div>
<div class="content wysiwyg-content">
Dear all, <br />
One of our customers needs to unify 2 domains to be 1 domain.<br />
Current situation:<br />
Exchange 2007 sp3<br />
1 external domain xyz.com<br />
1 local domain abc.com <br />
Both are pointing to same exchange server.<br />
Our customer need to delete and stop the internal domain completely and keep the external domain.<br />
<br />
my question is : what is the prototype procedures and best practices to do so.<br />
Any documents for step by step guide?<br />
what the expected downtime?<br />
How to change the contact list where to force user to use external domain instead of local domain?
</div>
</div>


Dear all, 
One of our customers needs to unify 2 domains to be 1 domain.
Current situation:
Exchange 2007 sp3
1 external domain xyz.com
1 local domain abc.com 
Both are pointing to same exchange server.
Our customer need to delete and stop the internal domain completely and keep the external domain.

my question is : what is the prototype procedures and best practices to do so.
Any documents for step by step guide?
what the expected downtime?
How to change the contact list where to force user to use external domain instead of local domain?

Domain unify

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.

Exchange

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.