DOCUMENT:Q176181 14-MAR-1999 [exchange] TITLE :XCON: NDRs Dropped on Message to Recipient w/ Multiple DDAs PRODUCT :Microsoft Exchange PROD/VER:WINDOWS:5.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you submit a message to a recipient address that contains multiple DDA pairs, any non-delivery report (NDR) that may occur for the message will be discarded by the Store. An example of an address which meets this criteria is as follows: C=;A=;P=;O=; DDA:RFC822=User@domain.com;DDA:MSXCX500=C=;A=; P=;O=;OU=;CN=User CAUSE ===== As in the above example, the DDA pairs are defined in the following order: DDA1 type, DDA1 value, DDA2 type, DDA2 value However, when parsing the address, the order was assumed as DDA1 type, DDA2 type, DDA1 value, DDA2 value. As such, a failure occurs upon parsing of the address when more than 1 DDA is present. STATUS ====== Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.0. 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 ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange500 kbZNotKeyword2 Version : WINDOWS:5.0 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 1999.