When using PasswordSync with a JMS mode configuration, the logs only show successful or failed deliveries to the JMS server. From this point on, you must rely on server side logs. JMS tracing is a little more complex.
You can trace the com.waveset.rpc.PasswordSyncHandler class at level 4 to convert the messages generated by the PasswordSync dll into a JMS message and add those messages to the JMS queue. Limited tracing is available in this class, and only level 4 provides enough information to help with troubleshooting.
If PasswordSync successfully delivers the JMS message to the JMS queue, the tracing will not help you find the cause of a problem. The next, and final step is to trace the JMS adapter. See the Sun Identity Manager 8.1 Resources Reference for instructions.