XCON: Exchange Message Transfer Agent May Stop Unexpectedly When Restarting After an Abnormal Shutdown

ID: Q244144

The information in this article applies to:

Microsoft Exchange Server, versions 5.5, 5.5 SP1, 5.5 SP2, 5.5 SP3

SYMPTOMS

The message transfer agent (MTA) for Exchange Server version 5.5, 5.5 Service Pack 1 (SP1), 5.5 Service Pack 2 (SP2), and 5.5 Service Pack 3 (SP3) may stop unexpectedly if you restart it after an abnormal shutdown. The MTA logs an event 9405 in the application event log that is similar to the following:

An unexpected error has occurred which may cause the MTA to terminate.
Error: Access violation (0xc0000005) at Address 0x42572e reading from 0x104. [BASE DISP:FANOUT 10] (16)

Note that the address for the access violation may differ slightly depending on the version of the MTA. This problem is encountered at address 0x42572e for the Exchange Server 5.5 SP2 MTA. Servers that are configured to generate User.dmp files and Drwtsn32.log files using the Drwtsn32.exe program may produce a call stack similar to the following for the problem thread:


FramePtr ReturnAd Param#1  Param#2  Param#3  Function Name
03dfff28 004251fa 0044a10b 006927c8 01e68910 emsmta!otpmrfo [omap]
03dfff48 00443a8d 0044a10b 01ea4fa0 01be0014 emsmta!otpmmai2 [omap]
03dfff8c 0044a13a 01be0014 1004f86c 0000000b emsmta!otpmmain_897nThread::HrGetListenPort_26ad_81170ad [omap]
03dfffb8 77f04f3e 0000000b 01be0014 1004f86c emsmta!sbpiwbep [omap]
03dfffec 00000000 00000000 00000000 00000000 kernel32!lstrcmpiW
00000000 00000000 00000000 00000000 00000000 emsmta!OMP_D_MH_EE_GENERAL_TEXT

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Microsoft Exchange Server version 5.5 service pack that contains this fix.

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 on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

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

Component: Message transfer agent

File name	Version
Emsmta.exe	5.5.2651.37
P2.xv2	N/A
P42.tpl	N/A
P772.tpl	N/A

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

Additional query words:

Keywords : exc55 exc55sp1 exc55sp2 exc55sp3
Version : winnt:5.5,5.5 SP1,5.5 SP2,5.5 SP3
Platform : winnt
Issue type : kbbug