DOCUMENT:Q280411 08-MAY-2002 [exchange] TITLE :XADM: Sender Does Not Receive an NDR PRODUCT :Microsoft Exchange PROD/VER::5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- 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 described in this article and should be applied only to systems experiencing this specific problem. This fix may receive additional testing at a later time, to further ensure product quality. 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 fix. 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, please go to the following address on the World Wide Web: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS NOTE: In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal 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 this to be 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. Additional query words: ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 Version : :5.5 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.