Then the Exchange.TO_ENDPOINT and Exchange.FAILURE_ENDPOINT will still contain the value of <a href="http://someserver/somepath.OnPrepareFailureAvailable">http://someserver/somepath.OnPrepareFailureAvailable</a> as of Camel 2.16Before the exchange is sent to the dead letter queue, you can use onPrepare to allow a custom Processor to prepare the exchange, such as adding information why the Exchange failed.