Unreachable queue length - sustained for 60 minutes - Red(>1) - Hub Transport.


Applies to: Operations Manager Management Pack for Exchange 2010

Topic Last Modified: 2011-08-02

The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager includes a performance data collection engine that is used to query performance counter objects on computers running Exchange 2010. For this Operations Manager rule, data is collected by using the performance counter specified in the Details table.

To review the value of the performance counter that generated this alert, in Operations Manager, double-click this alert, and then click the General tab. Review the description of the alert that includes the variables specific to your environment.


Product Name


Product Version

14.0 (Exchange 2010)



Object Name

MSExchangeTransport Queues

Counter Name

Unreachable Queue Length

Instance Name


Sample Interval


Server Role

Ex14. Hub Transport

Critical Error Threshold


Rule Path

Microsoft Exchange Server/Exchange 2010/Hub Transport/Transport Queues

Rule Name

Unreachable queue length - sustained for 60 minutes - Red(>1) - Hub Transport.


Thank you for clicking the link that brought you to this page. We do not currently have an article to resolve this specific issue. Your attempt to get to content for this alert helps us prioritize the Exchange Server 2010 Management Pack alerts for which we will be providing detailed explanations and user actions.

Although there is as yet no supplementary content specifically written to help resolve this Exchange 2010 Management Pack alert, here are some recommended next steps to learn more about this alert:

  • 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 alert may provide more information about the root cause of this error.

  • Research your issue by using self-support options. From the navigation pane of the Exchange Server Solutions Center page, click Self Support Options to use the following and other self-help options:

    • Search the Microsoft Knowledge Base. For example, search the Knowledge Base for key words in the Rule Name for this alert. If the alert was triggered by an event, search for the Event Source and event ID associated with this alert.

    • Search the Exchange 2010 Forum. You can also post a question there.

    • Search the Exchange Server Community Web site.

  • Research your issue by using other resources. From the navigation pane at the Exchange Server Solutions Center page, click Key Resources to learn about other resources.

  • Resolve your issue by using assisted support options. From the Exchange Server Solutions Center page, 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 reviewing your organization's guidelines first. If you do contact support, have the event ID information available. Also, if possible, be prepared to send your application and system logs to the support professional.

User Action

For More Information

If you are not already doing so, consider running the Exchange tools, which have been 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 and improve mail flow. 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.