DOCUMENT:Q164862 08-JAN-2000 [exchange] TITLE :XCON: MTA Raises Exception Error on X.25 Connections PRODUCT :Microsoft Exchange PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:kbusage ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== The Microsoft Exchange Server MTA may raise an exception error on X.25 connections. Specifically, a RaiseException() may occur in the X.25 DMOD in the MTA. CAUSE ===== RaiseException()is called from the MTA code when it receives an X.25 result for an X.25 control block (CB) that no longer exists. This condition should be handled by the MTA rather than causing the MTA to stop. The error handling was changed to remove the RaiseException() and add in a DebugBreak() for the debug build (in Ntil\Cc\Sbpdeccb.c). The change allows the MTA to obtain more information the next time it happens with the debug build, and still does not stop normal running of retail builds. 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: " SERVPACK " (without the quotation marks) Additional query words: unhandled access violation AV GPF general protection fault invalid page illegal operation ====================================================================== Keywords : kbusage Technology : kbExchangeSearch kbExchange400 kbZNotKeyword2 Version : winnt:4.0 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 2000.