The work queue that the Protocol Analysis agent uses is full
Topic Last Modified: 2007-11-16
The Microsoft Exchange Server 2007 Management Pack for Operations Manager 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 Operator Console, select this alert, and then click the Properties tab.
Review all events that have been logged that meet the criteria of this Operations Manager alert. From the Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description.
Details
Product Name |
Exchange |
Product Version |
8.0 (Exchange Server 2007) |
Event ID |
100 |
Event Source |
MSExchange Antispam |
Alert Type |
Warning |
MOM Rule Path |
Microsoft Exchange Server/Exchange 2007/Common Components/Hub Transport and Edge Transport/Agents/Common |
MOM Rule Name |
The work queue that the Protocol Analysis agent uses is full. This does not affect SRL calculations. However, 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. As stated in the event description, sender reputation level (SRL) calculations are not affected. 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.
For information about sender reputation anti-spam functionality in servers that run Microsoft Exchange Server 2007, see Sender Reputation.
User Action
No user action is required if this event rarely occurs. However, if the warning persists, follow one or more of these steps:
Review the Application event log 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.
If this event seems to be causing mail flow interruptions or other problems in your Exchange environment, contact Microsoft Product Support. For information about how to contact support, visit Microsoft Help and Support.
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 the Active Directory directory service.
The default value for msExchSenderReputationMaxWorkQueueSize attribute is 1,000.
For More Information
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 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.