DOCUMENT:Q191267 01-MAY-1999 [exchange] TITLE :XFOR: IMC Won't Identify Which Server Produced Postmaster NDR PRODUCT :Microsoft Exchange PROD/VER:WINDOWS:4.0,5.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, versions 4.0, 5.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When a message bounces and a non-delivery report (NDR) is produced, the sender will receive a message from the Postmaster. Exchange Server 4.0 will return an NDR from postmaster@domain.com, and Exchange Server 5.0 will return a NDR from postmaster.hostName@domain.com. Exchange Server 4.0 sends the NDR to the wrong administrator, and causes some confusion in troubleshooting the problem. CAUSE ===== This problem was by design and was fixed in Exchange Server 5.0. WORKAROUND ========== The perfect solution would be to upgrade computers running Exchange Server 4.0 to 5.0. If that's not possible, the following workaround will resolve the issue of misdirected NDR replies from users. However, it affects all Exchange Server users and custom recipients on the server. Although this workaround worked in a test environment, it should be tested on a large number of servers before implementation in a production environment. 1. Double-click the Network icon in Control Panel, and click the Protocols tab. 2. Select TCP/IP Protocol, and click Properties. 3. In the DNS tab, add the server name in front of the domain name in the Domain Name textbox. For example, if you enter Server1.DomainName in the Domain Name textbox, the NDR will be from POSTMASTER@Server1.DomainName.com, where Server1 is the hostname of an Exchange Server computer as specified in the Domain Name Service (DNS). ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange500 kbExchange400 kbZNotKeyword2 Version : WINDOWS:4.0,5.0 Issue type : kbprb ============================================================================= 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 1999.