XFOR: MSMI NDRs Dir-Sync Messages Under Certain Circumstances

• Microsoft Exchange Server, versions 4.0 Service Pack 1, 2, and 3

SYMPTOMS

When an MS Mail postoffice is configured to participate in directory synchronization (dir-sync) with a Microsoft Exchange Server, dir-sync traffic from the MS Mail postoffice may generate a Non Delivery Report by the MS Mail Connector Interchange service (MSMI), and never reach the Microsoft Exchange Server Directory Synchronization service (DXA).

MORE INFORMATION

If the postoffice name of the MS Mail postoffice is similar to that of the Microsoft Exchange Server connector postoffice, the dir-sync messages will generate a Non Delivery Report, and the following warning will be logged in the Windows NT event log.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

   31/12/96 19:56:34 MSExchangeMSMI Warning  NDR   2117  N/A
      EXGAU30003  Non delivery report generated.

   From: ANZAUDCU/MEL227TRK0/$SYSTEM
   Subject: SrvTx R=3 S=87298 (was 0), I=2 15603 sen

   [004] Message circular route detected.
   Message followed the following route:
     ANZAUDCU  /MEL227TRK
     ANZAUDCU  /MEL227TRK
     K         /

   Attempted to send to the following addresses:
   ANZAUDCU/MEL227TRK/SYSTEM1

In this example, the Microsoft Exchange Server connector postoffice name is MEL227TRK, and the MS Mail postoffice name is MEL227TRK0.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem was corrected in the latest Microsoft Exchange 4.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

   S E R V P A C K