Microsoft KB Archive/225157

= XCON: MTA Stops Unexpectedly with Cirel Winsock X.400 Connection =

Article ID: 225157

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q225157





SYMPTOMS
If you configure an X.400 Connector to use a Cirel Winsock X.25 card installed in an Exchange Server computer, the Message Transfer Agent (MTA) may stop unexpectedly. This problem is most likely to occur during heavy message traffic.



CAUSE
This problem occurs when the Cirel Winsock transport sends a malformed buffer into the stack. If the data is invalid, it should not be passed up the stack to the MTA, but it is.



RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or later:

Component: MTA



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.



MORE INFORMATION
The User.dmp file may contain a call stack similar to the following: FramePtr RetAddr Param1 Param2 Param3 Function Name 04c2fed4 00552d7c 00000014 04c2fef8 0413d940 EMSMTA!oppsscnc+0x7c 04c2ff08 0055a04f 00000014 0068cb4c 04005ec8 EMSMTA!oppsstdt+0x7d 04c2ff30 0055b991 04006848 0413d940 04005ec8 EMSMTA!oppssprc+0x97 04c2ff60 004aa742 00000014 00000320 00dcfd38 EMSMTA!oppsitps+0x13b 04c2ff8c 00471f1c 00dcfd38 00c606b0 00000014 EMSMTA!oppsin+0x208 04c2ffb8 77f04ee8 00000014 00dcfd38 00c606b0 EMSMTA!sbpiwbep+0x58 04c2ffec 00000000 00000000 00000000 00000000 KERNEL32!BaseThreadStart+0x51 The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Keywords: kbbug kbfix KB225157

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