We are using Exchange 2007 and have 2 Server with all role and 2 EDGE server But only 1 server have Public Folder Recently, I got some error log due to Public Folder replication from NON_IPM_Subtree ,(I found many duplicate folder) I am thinking, I have only 1 server have public folder, do i need to replicate it? if i disable the public folder replication, any concern?

Can you post the exact errors you were getting?

Hi You don't NEED to have a replica, but I should say.. it depends If you are using Outlook 2003 and older you will need a PF DB for OAB But if you have Outlook 2007 and newer you don't need the PF DB for the OAB distribution Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

The exactly error i posted on another post http://social.technet.microsoft.com/Forums/en/exchangesvradmin/thread/b5868d7e-ff2e-4b45-a92d-05c423610b53 The exchange is from 2003 to 2007 (long time ago, the guy has already resigned)

Have you checked result in the ExBPA as xiu zhang suggested in another thread? Please provide all information in two events Please go to ADSI editor, and check if there’s any stale entry for old decommissioned exchange server under “CN=Servers” container Please also check “msExchOwningPFTreeBL” attribute, it shall contain the path of existing public stores a. Start->Run->ADSIEdit.msc b. Expand “Configuration”->”CN= Configuration,DC=DomainName,DC=Com”->”CN=Services”->”CN=Microsoft Exchange”->”CN=OrgName”->”CN=Exchange Administrative Groups”->”CN=AdministrativeGroupName”->”CN=Folder Hierarchies” c. In the right-pane, double-click “CN=Public Folders”, in the jumped windows, double-click the “msExchOwningPFTreeBL” attribute. The default format of the value in “msExchOwningPFTreeBL” is like below: CN=Public Folder Store (SERVER2),CN=First Storage Group,CN=InformationStore,CN=SERVER2,CN=Servers,CN=First Administrative Group,CN=Administrative Groups,CN=Company,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=lab,DC=comJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com

I use ExBPA ,doesnt have any error. have some warnings such as network drive too old ( is not related) Also, I checked the msExchOwningPFTreeBL” attribute, it contains the path of existing public stores.

Please check the replica of the duplicate public folders Get-PublicFolder -Identity \NON_IPM_SUBTREE -Recurse | Ft -Wrap Name,Replicas And please check the content of the duplicated folders, is there any data in the folders?James Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com