The Lsntsmex.exe process is restarted in Exchange Server 2003 without an event being logged in the Application log when you use Exchange Connector for Lotus Notes to connect Exchange Server 2003 to Lotus Notes

Consider the following scenario. You use the Microsoft Exchange Connector for Lotus Notes to connect Microsoft Exchange Server 2003 to Lotus Notes. The Exchange Connector for Lotus Notes retrieves a message by using the Lotus Notes API. If the message retrieval fails, Exchange Server 2003 tries to send a non-delivery report (NDR) message. Additionally, Exchange Server 2003 tries to remove the message. If sending the NDR message fails or if removing the message fails, the Lsntsmex.exe process is restarted. Additionally, although you expect this event to be logged in the Application log, no event is logged in the Application log.

Note The Lsntsmex.exe process is part of the Exchange Connector for Lotus Notes.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

Because of file dependencies, this hotfix requires Microsoft Exchange Server 2003 Service Pack 1 (SP1).

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.After you install this hotfix, you must set a registry value to enable the hotfix. To do this, follow these steps.

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry subkey:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LME-NOTES\Parameters
3. On the Edit menu, point to New, and then click DWORD Value.
4. In the details pane, type LogEventOnInboundError for the new DWORD value.
5. Right-click LogEventOnInboundError, and then click Modify.
6. In the Edit DWORD Value dialog box, click Decimal under Base.
7. In the Value data box, type 1, and then click OK.
8. Quit Registry Editor.

Note After you configure this registry value, you must restart the computer.

• If the LogEventOnInboundError registry value is set to 1, the Exchange Connector for Lotus Notes logs event ID 41423 in the Application log when the Exchange Connector for Lotus Notes encounters an error during the processing of an incoming message. Event ID 41423 is logged when the error is other than an out-of-memory error. Event ID 41423 indicates that the Lsntsmex.exe process will restart and will try to log the information if Exchange Server 2003 can obtain the information by using the Lotus Notes API.
• If the LogEventOnInboundError registry value is not set to 1, the Exchange Connector for Lotus Notes does not log event ID 41423 in the Application log. Additionally, the Lsntsmex.exe process may be restarted repeatedly for several minutes.

Note After you install this hotfix, the following information about the original e-mail message will be logged repeatedly in event ID 41423 in the Application log:

• The original message number in the in-memory message list
• The sender of the message
• The size of the message
• The priority level of the message
• The number of recipients in the message
• The first and second recipient names in the message

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

Microsoft continues to update the tools that support interoperability among Lotus Domino R5 and Lotus Domino 6, Microsoft Exchange Server 2003, and Microsoft Windows Server 2003 Active Directory. The updated tools for Lotus Domino replace the following tools that are included with Exchange Server 2003 and with Microsoft Exchange Server 2003 Service Pack 2:

• Exchange Connector for Lotus Notes
• Calendar Connector for Lotus Notes
• Migration Wizard for Lotus Notes

To obtain these tools and to obtain guidance and additional resources, visit the following Microsoft Web site: These updated tools provide additional functionality and address several issues that customers reported with earlier versions of the tools.