XFOR: Dirsync Error: Warning [30] Message Contains Duplicate Email Address

ID: Q187779

The information in this article applies to:

Microsoft Exchange Server, versions 4.0, 5.0, 5.5

SYMPTOMS

After a new Exchange Server computer has been added to an Exchange Server site, that is a requestor in directory synchronization (dirsync) with a Microsoft Mail 3.x postoffice (PO), the following warnings may appear in the Dirsync log:


    Warning [154]Non delivery report
    Warning [30] 154 Message contains duplicate email address. Mail item
    was not delivered to(requestor name)

Address lists updates will not be propagated to the Exchange Server site, and no errors or warnings will show up in the Event Log for the Exchange requestor.

CAUSE

The new Exchange Server computer has been given the Microsoft Mail address "SHADOWNET\SHADOWPO\SYSTEM1" under the Directory Synchronization tab as the Requestor server. Consequently, the errors occur and dirsync stops functioning.

Usually, when a new server is added to the site, directory replication checks for other MS Mail connectors and if it finds any, it automatically increments the MS Mail address in sequential order. For example, if a fourth Exchange Server computer is added to a site with an MS Mail connector, as a dirsync requestor, it will look for the connector during directory replication, and then assign it the address SHADOWNET\SHADOWPO\SYSTEM4.

WORKAROUND

On the Directory Synchronization Properties page, highlight the new server and edit the Microsoft Mail e-mail address.

MORE INFORMATION

For additional information on how the Exchange Server Directory Synchronization address can be changed, please see the following Microsoft Knowledge Base article:

Q150828 XFOR: Dirsync Role/Number of Servers can Change DXA Addresses

Additional query words: dirsync new address error 30 thirty

Keywords : XADM exc4 exc5 exc55
Version : winnt:4.0,5.0,5.5
Platform : winnt
Issue type : kbprb