Topic Last Modified: 2006-05-17

The Microsoft® Exchange Server Analyzer Tool sends a test message from the Exchange server to the Postmaster account or a user-defined account for the Simple Mail Transfer Protocol (SMTP) domain and then scans the message tracking logs of the server to determine whether any issues were found with the delivery of the test message.

As a part of this scan, the Exchange Server Analyzer queries the EntryType property for the Exchange_MessageTrackingEntry Microsoft Windows® Management Instrumentation (WMI) class under the root\MicrosoftExchangeV2 namespace to determine what caused the message tracking log entry(s) to be created.

The Exchange Server Analyzer displays an error if the following conditions are true:

This error indicates that the test message is still in one of the Simple Mail Transfer Protocol (SMTP) Remote Delivery queues for the sending server and there is an issue with the queue.

A Remote Delivery queue holds messages that are destined for remote delivery. The name of the queue matches the remote delivery destination. This destination may be a connector, a server, or a domain.

To resolve this error, use the NSlookup utility to review possible issues with Domain Name System (DNS) resolution. For connection and protocol issues such as Host unreachable errors, use Telnet.exe to try to connect to the destination computer. To troubleshoot protocol errors, increase diagnostic logging for the MSExchangeTransport service for the SMTP Protocol component, and review the logs for errors. Alternatively, you can use the Network Monitor (Netmon.exe) tool to obtain information about network connection errors. To reproduce the problem, you may have to force the queue to try again. Examine the event log for possible errors associated with the Microsoft Exchange Information Store service.

For more information about how to modify logging settings, see "How to Modify Logging Settings for MSExchangeTransport" in the "Troubleshooting Mail Flow and SMTP" section of the Exchange Server Transport and Routing Guide (

For more information about how to troubleshoot SMTP queues, see the following Exchange resources: