Microsoft KB Archive/301690

= XIMS: Corrupted Message Header Causes Access Violation in Msexcimc.exe =

Article ID: 301690

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition
 * Microsoft Exchange Server 5.5 Service Pack 1
 * Microsoft Exchange Server 5.5 Service Pack 2
 * Microsoft Exchange Server 5.5 Service Pack 3
 * Microsoft Exchange Server 5.5 Service Pack 4

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This article was previously published under Q301690





SYMPTOMS
When you receive a Simple Mail Transfer Protocol (SMTP) message with a corrupted header, an access violation may occur in Msexcimc.exe. If you have the correct symbols or if you view a debugger, you see the following stack:

0374f3b4 6fff13c4  00f00588 00f10b40 6facfaab EXCHMEM!MpHeapFree+0x88 0374f3c0 6facfaab  00f10b40 6facfb55 00f00588 EXCHMEM!ExchMHeapFree+0x14 0374f3c8 6facfb55  00f00588 00000000 00f10b40 MAPI32!LH_IntHeapFree+0xb 0374f3d8 6fa95067  00f00588 00000000 00f10b40 MAPI32!LH_ExtHeapFree+0x15 0374f3fc 6faa0ebe  00f00588 0374f660 00000000 MAPI32!MAPIFreeBuffer+0x77 0374f410 0040b1fe  00f362b8 00000000 0374f478 MAPI32!FreePadrlist+0x1e 0374f434 0040b0ab  0374f660 00000000 00000000 MSEXCIMC!CAdrIn::hrCreateSrcAdrLists+0xf7 0374f448 0040a5d1  0374f660 00d91018 0374f538 MSEXCIMC!CAdrIn::hrPrepareLists+0xf 0374f4c8 0040b7a7  00d93de0 00d93e20 00d91168 MSEXCIMC!hrResolveAddresses+0xd5 0374f500 0040ddbd  00474454 0047b040 00d93de0 MSEXCIMC!hrResolveAdrs+0x53(...) 0374fe0c 0040c990  00d93d40 00d93358 00d93330 MSEXCIMC!HrSendMessageIn+0x1065 0374ff70 004312d8  00d93d40 00d93358 00d93d40 MSEXCIMC!ProcessInboundItem+0xfc 0374ff84 0044892d  00d93d40 00000000 00430a42 MSEXCIMC!ProcessInbound+0x4a 77f1d363 408b0000  74ffc324 74ff0824 15ff0824 MSEXCIMC!InboundWorkerThread+0x59



CAUSE
This problem can occur if an error condition causes the Msexcimc.exe code to try to free the same memory twice.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. 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 hotfix.

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, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

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

Component: Internet Mail Service

NOTE: Because of file dependencies, this fix requires Microsoft Exchange Server version 5.5 Service Pack 4.



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5.

Keywords: kbhotfixserver kbqfe kbbug kbexchange550presp5fix kbfix kbqfe KB301690

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