XCON: MTA Service on RAS Bridgehead Server Stops Repeatedly with Events 9315, 9405
ID: Q253310
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The information in this article applies to:
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Microsoft Exchange Server, version 5.5
IMPORTANT: This article contains information about editing the registry.
Before you edit the registry, make sure you understand how to restore it if
a problem occurs. For information about how to do this, view the "Restoring
the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help
topic in Regedt32.exe.
SYMPTOMS
When you designate an Exchange Server 5.5 computer as a Remote Access Service (RAS) bridgehead server for three remote sites, the message transfer agent (MTA) may stop unexpectedly. When you restart the MTA, the service may resume its normal function only to stop repeatedly.
The application log of Event Viewer displays the following events:
Event ID: 9315
Source: MSExchangeMTA
Type: Warning
Description: A resource limit has been reached when attempting to open a RAS association. The number of entries configured is 2. [BASE IL MAIN BASE 1 505] (12)
Event ID: 9405
Source: MSExchangeMTA
Type: Error
Description: An unexpected error has occurred which may cause the MTA to terminate. Error: Double acquire of semaphore 2210. [BASE MAIN BASE 1] (16)
RESOLUTION
WARNING: Using Registry Editor incorrectly can cause serious problems that
may require you to reinstall your operating system. Microsoft cannot
guarantee that problems resulting from the incorrect use of Registry Editor
can be solved. Use Registry Editor at your own risk.
For information about how to edit the registry, view the "Changing Keys and
Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete
Information in the Registry" and "Edit Registry Data" Help topics in
Regedt32.exe. Note that you should back up the registry before you edit it.
If you are running Windows NT, you should also update your Emergency
Repair Disk (ERD).
To resolve this behavior, stop the MTA service, and then follow these steps:
- Start Registry Editor (Regedt32.exe).
- Locate the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\
MSExchangeMTA\Parameters
NOTE: The above registry key is one path; it has been
wrapped for readability.
- Double-click the RAS LAN-MTA DMOD threads value, and
increase the data value from 2 to 4.
- Double-click the Concurrent Connections to RAS LAN-MTAs
value, and increase the data value to 10.
- Quit Registry Editor.
- Restart the MTA.
Additional query words:
Keywords :
Version : winnt:5.5
Platform : winnt
Issue type : kbprb