Microsoft KB Archive/280411

= XADM: Sender Does Not Receive an NDR When One Exchange Server Computer Is Down in a Multiple-Server Site =

Article ID: 280411

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q280411





SYMPTOMS
When one of the Exchange Server computers is down in a site that contains multiple servers, and a message cannot be delivered, a non-delivery report (NDR) may not be returned to the sender if the following conditions exist:
 * The Exchange Server site contains more than two Exchange Server computers.
 * The message is sent from one server to a recipient on another server.
 * The recipient server's message transfer agent (MTA) is down.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Microsoft Exchange Server 5.5 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

This fix should have the following file attributes:

  Date          Time    Version      Size        File name         Platform -  Aug-12-2000   10:37   0.0.0.0000   2,953,216   Q280411engi.exe   Intel Aug-12-2000  10:33   0.0.0.0000   4,509,696   Q280411enga.exe   Alpha

After the hotfix is installed, the following files will have the listed attributes or later:   Date          Version       Size        File name      Platform --  Aug-09-2000   N/A              41,254   Dbserver.sch   Intel and alpha Aug-09-2000  N/A             159,634   Dcprods.cat    Intel and alpha Jul-12-2000  5.5.2654.35      69,392   Ems_rid.dll    Intel Jul-12-2000  5.5.2654.35     139,024   Ems_rid.dll    alpha Jul-12-2000  5.5.2654.35   1,931,024   Emsmta.exe     Intel Jul-12-2000  5.5.2654.35   3,557,648   Emsmta.exe     alpha Jul-12-2000  5.5.2654.35     167,184   Mtacheck.exe   Intel Jul-12-2000  5.5.2654.35     304,400   Mtacheck.exe   alpha Jul-12-2000  5.5.2654.35     745,744   Mtamsg.dll     Intel Jul-12-2000  5.5.2654.35     748,816   Mtamsg.dll     alpha Jul-12-2000  5.5.2654.35      16,144   Mtaperf.dll    Intel Jul-12-2000  5.5.2654.35      27,408   Mtaperf.dll    alpha Aug-09-2000  N/A              50,789   P2.xv2         Intel and alpha Aug-09-2000  N/A              14,002   P42.tpl        Intel and alpha Aug-09-2000  N/A              40,706   P772.tpl       Intel and alpha Jul-12-2000  5.5.2654.35     322,320   X400om.dll     Intel Jul-12-2000  5.5.2654.35      94,192   X400om.dll     alpha



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5.



MORE INFORMATION
If the Exchange Server MTA service stops on one server, Exchange Server versions 4.0 and 5.0 return an NDR to the sender and delete the message from the MTA queue when the message exceeds the retry limit and the retry intervals. This behavior changes in Exchange Server 5.5; the MTA keeps trying to send the message until the recipient server's MTA service is restarted.

Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe KB280411

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