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

Couldn't load the IP reputation data file.


This Error event indicates that the IP reputation data file could not be loaded or read. This may be caused by one of the following issues:

  • The file is corrupted at the binary level.

  • The file cannot be read because it is locked by another process.

  • The file is larger than two gigabytes.

The IP reputation data files are Microsoft.SmartScreen.DomainRep.dat and Microsoft.SmartScreen.Fp.Dat. By default, the files are located at %ExchangeInstallPath%\TransportRoles\Agents\Hygiene. The server will continue processing, but sender reputation will be inoperative.

User Action

To resolve this error, do one or more of the following:

  • 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.

  • If a write lock by another process is the cause, determine why the other process is writing to this file. If it is a file level antivirus program, exclude the directory from the antivirus scan.

  • If the file is either corrupted or larger than two gigabytes:

    • Contact a Microsoft Support professional to resolve this issue. To contact a Microsoft Support professional, visit the Exchange Server Solutions Center. In the navigation pane, click Assisted Support Options and use one of the 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.