Topic Last Modified: 2006-10-04
The Microsoft® Exchange Server Analyzer Tool queries the Exchange_Queue Windows® Management Instrumentation (WMI) class to determine the values of the following attributes for the Simple Mail Transfer Protocol (SMTP) queues of the SMTP virtual server.
Indicates the identifier for the link that contains the queue.
Indicates the identifier of the queue.
Indicates the name of the queue.
Indicates the name of the virtual machine that contains the queue.
Indicates the name of the virtual server that the queue is on.
Indicates the number of messages in the queue.
The Exchange Server Analyzer uses the information obtained here to query the Exchange_QueuedSMTPMessage WMI class for the values of the following attributes of the messages in the queue:
Indicates the recipients of the message.
Indicates the received time stamp for the message.
Indicates the identifier of the queued message.
Indicates that transmission is being retried for a message that was not delivered successfully.
Finally, uses the data obtained here to query the Active Directory® directory service for the distinguishedName value of each Recipient object. The Exchange Server Analyzer then determines whether the recipient is a user, a distribution group, a public folder, or a public folder store.
If the Exchange Server Analyzer determines that at least 25 percent of the messages stuck in the queue are addressed, in either the To: or Cc: fields, to recipients whose mailboxes are homed on the same public folder store, the Exchange Server Analyzer displays a warning.
If the Exchange Server Analyzer determines that at least 50 percent of the messages stuck in the queue are addressed, in either the To: or Cc: fields, to recipients whose mailboxes are homed on the same public folder store, the Exchange Server Analyzer displays an error.
This warning or error means that the public folder store identified is a common destination for messages that are stuck in an SMTP queue.
To address this issue, the public folder store should be investigated as follows for configuration issues, replication storms, or other anomalies that could cause messages to queue for it:
- Make sure that the store object attributes are set correctly
and contain the correct values in Active Directory.
- Review the Active Directory permissions of the store
object for the correct settings.
- Look for possible unsolicited commercial e-mail (UCE), or spam,
or virus attacks against the public folder.
- Check for changes to the public folder hierarchy or content
that might generate lots of replication between public folder
For more information about how to troubleshoot SMTP queues, see the following Exchange resources:
- "Troubleshooting Mail Flow and SMTP" in the Exchange Server
Transport and Routing Guide (http://go.microsoft.com/fwlink/?LinkID=67875).
- Microsoft Knowledge Base article 823489, "How to use Queue
Viewer to troubleshoot mail flow issues in Exchange Server 2003"
- Microsoft Knowledge Base article 842273, "How to troubleshoot
public folder replication problems in Exchange 2000 Server and
in Exchange Server 2003" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=842273).