Transport latency impacted - 99th percentile of messages not meeting SLA over last 30 min - Red(>90).


Applies to: Operations Manager Management Pack for Exchange 2010

Topic Last Modified: 2011-08-03

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 Component Latency

Counter Name


Instance Name

Total Server Latency

Sample Interval


Server Role

Ex14. Common

Critical Error Threshold


Rule Path

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

Rule Name

Transport latency impacted - 99th percentile of messages not meeting SLA over last 30 min - Red(>90).


This Error event indicates that end-to-end e-mail message flow is taking longer than 90 seconds for more than percent of all messages that have been handled over the previous 30 minutes.

This event may be triggered when one or more of the following conditions are true:

  • A networking issue exists.

  • The Microsoft Exchange 2010 Transport server is under a heavy load.

  • The particular messages have been sent to large distribution groups.

  • A Transport Agent issue exists. For example, the antivirus agent or Rights Management Services agent may be experiencing an issue.

User Action

To resolve this problem, do the following:

  1. Use the Message Tracking tool in the Toolbox in the Exchange Management Console to determine which messages have taken more than 90 seconds to be transferred. For more information, see Understanding Message Tracking.

  2. Examine each message to determine the reason for the slow delivery time.

  3. Look for configuration errors. For help to determine what might be configured incorrectly, run the Microsoft Exchange Best Practices Analyzer, which is located in the Toolbox. For help to troubleshoot mail flow issues, run the Mail Flow Troubleshooter, which is located in the Toolbox.

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.