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The route to the source transport server or MTA server for the specified connector could not be found in the routing tables


Topic Last Modified: 2007-11-16

The Microsoft Exchange Server 2007 Management Pack for Microsoft Operations Manager (MOM) monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.

To learn more about this event, do one or more of the following:

  • Review the description of the event that includes the variables specific to your environment. From the MOM Operator Console, select this alert, and then click the Properties tab.

  • Review all events that have been logged that meet the criteria of this MOM alert. From the MOM Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description.


Product Name


Product Version

8.0 (Exchange Server 2007)

Event ID


Event Source


Alert Type

Critical Error

MOM Rule Path

Microsoft Exchange Server/Exchange 2007/Common Components/Hub Transport and Edge Transport/Transport

MOM Rule Name

The route to the source transport server or MTA server for the specified connector could not be found in the routing tables. The source Hub Transport server has been ignored.

This Error event indicates that the Microsoft® Exchange Server  2007 transport routing engine cannot route messages through the connector specified in the event description. Microsoft Exchange ignored the source transport server. This event may occur when one of the following conditions is true:

  • The source transport server specified on the connector is not valid.

  • The source transport server is not routable. For example, the source transport server cannot be found in the routing tables.

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

  • Make sure that you have correctly configured the source transport server on the connector specified in the event description. For information about how to configure connectors, see Managing Connectors.

  • Verify that a clear Active Directory® directory service site or routing group connector route exists to the servers specified in the connector.

For more information about how to configure topologies, see "Routing Differences" in Planning for Coexistence.

To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Search the Support Knowledge Base (KB) Web site.

To review Exchange 2007 event message articles that may not be represented by Exchange 2007 MOM alerts, see the Events and Errors Message Center.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

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