TROUBLESHOOTING THE RUS USING THE EVENT LOG

1. About troubleshooting with logging

Many RUS problems can be identified through careful examination of the application event log. It is useful to use event logging to troubleshoot the RUS for many different behaviors, such as when the RUS is not stamping objects at all, appears to be taking a long time, or is stamping them with the wrong proxy addresses. This article describes how to use the event log to identify these issues.

It is up to the domain RUS's for a given domain to stamp the mail-enabled objects in that domain naming context. Exchange allows you to create up to one domain RUS for every DC in the domain. If a domain has more than one domain RUS, the first step in the troubleshooting process is to choose one particular RUS to troubleshoot

To begin logging the events of interest to the application log, increase logging on the following objects to Maximum on the Exchange server responsible for the domain RUS you've chosen:

MSExchangeAL\LDAP Operations
MSExchangeAL\Address List Synchronization
MSExchangeSA\Proxy Generation (Exchange 2003 only)

Once you've chosen a domain RUS to look at and turned up logging on that Exchange server, the next step is to choose an object to test with, such as a user that has not been stamped yet in that domain. Once you know which RUS you're looking at, and which user you're expecting it to stamp, you can begin taking a closer look at what the RUS is doing.

Repeatedly choosing Rebuild on the RUS or Apply This Policy Now on a policy can complicate the troubleshooting process by causing the RUS to process large numbers of objects. This results in the application log quickly overwriting itself and makes it difficult to follow the sequence of events described above. When troubleshooting the RUS, it is best to avoid Rebuilding or Applying and instead focus on a single test user and use only Update Now to check for new and modified objects. After an Update Now, you can walk through the events described above to understand what the RUS is doing to a particular recipient.