Exchange 2007 and RUS

Posted on 2010-01-07
Last Modified: 2012-05-08

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?

Question by:yoshi66
    LVL 52

    Expert Comment

    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 .
    LVL 52

    Accepted Solution

    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 .... :)
    LVL 24

    Assisted Solution

    """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

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