Hi I had a query regarding GAL/OAB in Exchange 2003that I was hoping someone could help me with. Our root domain is company.com, and we have 3 child domains; company.uk.com, company.us.com and company.aus.com It is all one Exchange organisation, however UK, US and AUS are seperate Administrative Groups. A user was added some time ago to the aus.com domain, but this entry has not populated in the OAB properlyfor some reason. When our users are connected to Exchange in non-cached mode, they can see the entry fine. This leads me onto a question regarding the OAB....which server(s) are responsible for generating it? I have reports that users in aus.com and us.comcan see the entry in the OAB, but users in the UK domain can't. Is this possible? Are the Exchange servers in each Admin Group responsible for generating the OAB based on information they pull from the GC servers? In which case, if there was an issue with pulling this information, it's concievable to have different OAB's in the same organisation?

Hi Pancamo, Please check if you have multiple OAB defined? Which server is responsible for generation? Which is default OAB defined at Mailbox Databases? Dou you receive any errors regarding OAB at OAB generation server? Do you have public folders on every Exchange server? What about PF replication? Try to increase diagnostic logging... Do you see this behavior only for (every new) users in aus.com domain? Everything is working fine for other domains? If you have only one OAB for all users the only logical explanation is there is something with PF access for clients at aus.com domain. But in this case they would not see any new users created in Exch ORG. Best regards, Saso Erdeljanov http://exchange.si

Hi I am new to the environment here, do you know how I can check if we have multiple OAB's defined, and which server(s) are responsible for generation? Thanks

Hi Pancamo, you can find defined OABs under Recipients - > Offline Address Lists. You will also notice there generating server name... Best regards, Saso Erdeljanov http://exchange.si

Hi, You can check which server generated the OAB file through ESM->Recipients->Offline Address Lists->the offline address list name->Properties. Nevertheless, from your description, I think the issue does not relate to the OAB generation if the users in three sub-domains are configured to download same OAB. The issue seems relate to the Public Replication issue. Therefore, please let me know whether only a specific user encountered the problem. If you create other new users, whether does the issue also encountered? To troubleshoot Public Folder replication issue, please refer to following articles: http://msexchangeteam.com/archive/2008/01/10/447843.aspx Mike