<div>
There will also need to be some reconfiguration of your MX records to allow mail to flow to one place for both domains.
</div>


There will also need to be some reconfiguration of your MX records to allow mail to flow to one place for both domains.

<div>
Here is a good resource for this type of thing.<br />
<br />
<a href="http://paulslager.com/?p=140" rel="ugc">http://paulslager.com/?p=140</a>
</div>


Here is a good resource for this type of thing.

http://paulslager.com/?p=140 [http://paulslager.com/?p=140]

<div>
I will rephrase a little bit. &nbsp;They want to get rid of the two old email domains and share a new email domain. &nbsp;But the AD environments are separate and they are in two different physical locations.
</div>


I will rephrase a little bit.  They want to get rid of the two old email domains and share a new email domain.  But the AD environments are separate and they are in two different physical locations.

<div>
Then setup a trust between domains and add each as a site on the other's domain. &nbsp;Keep one Exchange server at one site and redo the domain name as well as the email address policy.
</div>


Then setup a trust between domains and add each as a site on the other's domain.  Keep one Exchange server at one site and redo the domain name as well as the email address policy.

<div>
<div class="content wysiwyg-content">
Two companies are combining but staying in different locations. &nbsp;Creating a single domain name for email. &nbsp;There are two separate AD environments.<br />
<br />
Company A has <br />
<br />
Domain-a.com<br />
exchange 2010<br />
<br />
Company B has<br />
<br />
domain-b.com<br />
exchange 2010<br />
<br />
Is there a way to make both email servers receive email domain-A-B.com.
</div>
</div>


Two companies are combining but staying in different locations.  Creating a single domain name for email.  There are two separate AD environments.

Company A has 

Domain-a.com
exchange 2010

Company B has

domain-b.com
exchange 2010

Is there a way to make both email servers receive email domain-A-B.com.

2 Locations - 2 Domains - 2 Exchange Servers - Single Email Domain

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.

Microsoft Legacy OS

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

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.