Topic Last Modified: 2010-02-05

The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager monitors the Windows Application log on computers running Exchange 2010 and generates this alert when the events specified in the following Details table are logged.

To learn more about this alert, in Operations Manager, do one or more of the following:


Product Name


Product Version

14.0 (Exchange 2010)

Event ID


Event Source

MSExchange Antispam

Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Common Components/Hub Transport and Edge Transport/Agents/Common

Rule Name

The Content Filter agent couldn't be initialized because ExSMime.dll couldn't be initialized.


This Warning event indicates that the ExSMime DLL could not be loaded. The cause of this warning is specified in the event description.

User Action

To resolve this warning, follow one or more of these steps:

  • Review the Application log and System log on your Exchange 2010 servers for related events. For example, events that occur immediately before and after this event may provide more information about the root cause of this error.

  • Try to reregister ExSMime.dll. To do this, open a Command Prompt window and then open the %ExchangeInstallPath%\bin directory on the Windows server where Exchange 2010 was installed. Run the following command: regsrv32 exsmime.dll

    Note   If you can reregister the dynamic link library, restart the Microsoft Exchange Transport service and monitor the Application log for warnings and errors associated with the Event Sources MSExchange Antispam and MSExchangeTransport. If you cannot reregister ExSMime.dll, see the "For More Information" section later in this topic to learn more about Exchange 2010 troubleshooting tools.

  • Resolve your issue by using self-support options, assisted support options, and other resources. You can access these resources from the Exchange Server Solutions Center. From this page, click Self-Support Options in the navigation pane to use self-help options. Self-help options include searching the Microsoft Knowledge Base, posting a question at the Exchange Server forums, and others. Alternatively, in the navigation pane, you can click Assisted Support Options to contact a Microsoft support professional. Because your organization may have a specific procedure for directly contacting Microsoft Technical Support, be sure to review your organization's guidelines first.

For More Information

If you are not already doing so, consider running the Exchange tools created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.