Connect 2 Seperate Exchange Servers with a common domain name

Hi, here is the situation:  Company1 and Company2 are two seperate companies both running Exchange 2003 STD on seperate domains. The two companies are merging, eventually all IT services will be centralized but in the mean time a common domain structure needs to be achieved.

I was planning on creating an IPSEC link between Company1 and Company2, then creating a Trust between domains so that communication will be possible.

My Question is how to I configure the two servers under a common internet domain name while retaining the existing domains as well?  Do I need to configure a bridge head on one server? Please advise.

Thanks in advance.  
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

They are separate Exchange orgs, so need to be treated as such.
What you want to do is share the smtp namespace. There are a number of ways to achieve this, start with this KB article:


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
systemssupplyAuthor Commented:
Will the new domain name show as the reply address from users from each company, or will the original domain show from one?
Exchange can be configured to show whichever address you want it to. It is all a matter of getting the right default email address on to the user accounts.

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.