Topic Last Modified: 2010-11-12

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

MSExchangeIS Mailbox

Counter Name

Messages Queued For Submission

Sample Interval


Server Role

Ex14. Mailbox

Critical Error Threshold


Rule Path

Microsoft Exchange Server/Exchange 2010/Mailbox/Database Copy Submission

Rule Name

Mail Submission Service is experiencing issues: Messages Queued For Submission - sustained for 15 minutes - Red (>25).


The Messages Queued for Submission performance counter indicates the number of messages in the mailbox store that are ready to be sent and that are waiting to be submitted to a transport server.

This alert indicates that that the number of messages in the mailbox store that are queued for submission to a transport server has been greater than 25 for 15 minutes. This alert may be caused by any of the following conditions:

  • Problems that affect the Microsoft Exchange Mail Submission service on the Mailbox server

  • A higher than normal load on the transport server

  • A resource bottleneck on the transport server

User Action

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

  • Verify that the Microsoft Exchange Mail Submission service is running on the Mailbox server.

  • Determine whether a bottleneck exists and, if so, which resources are creating the bottleneck. After you find the cause of the bottleneck, try to mitigate the problem. Possible bottlenecks include disk reads or writes, processor time, available memory, and network configuration.

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.