Retry Routing

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at]  

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 there were issues found with the delivery of the test message.

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

If the Exchange Server Analyzer finds a value of 1035 for the EntryType property, the Exchange Server Analyzer displays a warning.

This warning indicates that the test message is in a queue that is scheduled for a retry of routing. If a queue is in retry status, this status indicates that at least one error occurred in the previous attempts to process the messages in the queue. You can change queues in the Retry or Scheduled state to Active with the Force Connection command. This causes the queue to function as if the retry interval had passed or the scheduled time was reached. However, this method may not always work.

The properties of a queue can indicate a specific reason for a queue to be in Retry.

Messages accumulate in queues awaiting retry if Exchange Server routing problems exist. Messages have not been routed because of a transient error, that is, the routing engine did not successfully initialize. The messages are in the pre-routing queue waiting to be retried or are being rerouted.

To resolve this error, increase diagnostic logging for the MSExchangeTransport service to collect information about the Routing category component. Disable any unnecessary connector restrictions because the restrictions can cause a significant degradation in server performance. You may have to turn on the CheckConnectorRestrictions registry key for some restrictions.

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:


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