MSExchange Antispam 100

  • Article

 

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:

  • From the Operations Console, double-click this alert, and then click the General tab. Review the description of the alert that includes the variables specific to your environment.

  • From the Operations Console, double-click this alert, and then click the Alert Context tab. Review the logged events that meet the criteria of this Operations Manager alert.

Details

Product Name

Exchange

Product Version

14.0

Event ID

100

Event Source

MSExchange Antispam

Category

General

Symbolic Name

AgentQueueFull

Message Text

Protocol Analysis Background agent warning. The queue this agent uses is full. This does not affect SRL calculations. Open proxy, reverse DNS, and sender blocking are affected.

Explanation

This Warning event indicates that the work queue that the Protocol Analysis Background agent uses is full. Sender reputation level (SRL) calculations are not affected. As stated in the event description, open proxy, reverse DNS, and sender blocking are affected. Specifically, each connection is processed on a first-in first-out basis. If the queue is full, no new connection data is submitted for processing. Therefore, new connections are delayed until the queue falls below the maximum value. This warning may appear during times when the server is functioning at peak design load.

Note

The maximum queue length is controlled by the msExchSenderReputationMaxWorkQueueSize attribute of the Sender Reputation object in the Message Hygiene options of the Transport Settings in Active Directory. The default value for msExchSenderReputationMaxWorkQueueSize is 1,000.

For more information about sender reputation anti-spam functionality, see:

User Action

No user action is required if this event rarely occurs. However, if the warning persists, or this event seems to be causing mail flow interruptions or other problems in your Exchange environment follow one or more of these steps:

  • 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.

  • Resolve your issue by using self-support options, assisted support options, and other resources. You can access these resources from the Exchange Server Solutions Center. From this page, click Self-Support Options in the navigation pane to use self-help options. Self-help options include searching the Microsoft Knowledge Base, posting a question at the Exchange Server forums, and other methods. Alternatively, in the navigation pane, you can click Assisted Support Options to contact a Microsoft support professional. Because your organization may have a specific procedure for directly contacting Microsoft Product Support Services, be sure to review your organization's guidelines first.

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.