Exchange 2003 - Distribution List Update Question

Posted on 2009-12-17
Last Modified: 2012-05-08

Quick question.  Assuming my outlook client is running online and not cached mode how quickly, if I remove a user from the distribution list, will that list update immediatly for me and all other online users?

Reason I ask is someone recently removed someone from a list, sent an email, and found that user recieved that email even though they were removed from the list (No delegates etc) so I was just curious about the update times.

If someone could let me know that would be ideal as I have no environment to test this from at the moment.  Many thanks.
Question by:Jase_x
    LVL 65

    Expert Comment

    Its down to replication. On live information I would expect membership changes to be life within a few minutes - if replication between the domain controllers was working correctly.

    LVL 7

    Expert Comment

    You can also force an update of your RUS in exchange and it'll update right away.  

    Open System Manager, expand the folder called "Recipients", then highlight "Recipient Update Services".  
    In the right pane, you'll see two entries, one for enterprise and one for domain.  Right-click each one, and select "update now".  This will immediately update the exchange recipient lists so you won't have to wait for anything else.  

    It wont' cause any problems or force any reboots.  --TX

    Author Comment

    Thanks for your comments guys.  Is the distribution list info sent via all domain controllers as part of the update process do you know?
    LVL 65

    Accepted Solution

    Group membership is just an AD object. Nothing to do with RUS, because Exchange only looks at the group, not the members. It asks the domain controllers for the members and then sends email to the mail enabled users who are members of the group.

    RUS has nothing to do with domain controller replication - running a RUS update will not force Exchange to update at all. I would actually go as far as to say that forcing a RUS update is pointless in this scenario because you haven't change any mail enabled objects.


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