Exchange 2007 and RUS


We are running in a multi-domain forest;, and Currently Exchange 2003 SP2.

If I look at ESM, I can see that under Recipient Update Services, each domain has its own RUS server and RUS DC.

One of the domains,, comprises of two sites - East and West.

East will be moving to Exchange 2007, however West will remain on Exchange 2003 for the short future. At the moment, the RUS server is on - an Exchange server in East. Also, the RUS DC is

My question is, is it correct that Exchange 2007 no longer uses RUS at all? Instead using EMail Policies? The reason I ask is apparently when Exchange 2003 is removed from a RUS server, Exchange prompts for an alternative server to hold the RUS role (which can be an Exchange 2007 server).

Secondly, if we moved the RUS service to an Exchange server in West, should we also change the RUS DC to a West DC? I assume there is a lot of traffic between the RUS Exchange server and the RUS DC?

Who is Participating?
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.

Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Exchange 2007 uses RUS API not any object .... so in way correct

Alsoyou would have to point that Domain RUS to a Exchange and DC from West .
Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
You are on the right path and you just have to point the Domain RUS to Exchange and a GC in West ..... temember that the DC mentioned in the list should always be a GC .... :)

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
Rajith EnchiparambilOffice 365 & Exchange ArchitectCommented:
"""My question is, is it correct that Exchange 2007 no longer uses RUS at all? Instead using EMail Policies? """
This is correct.

Once you bring 2007 server into 2003, it will start using email address policies and not RUS. Make sure that you run /preparelegacyexchangepermissions
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.