title: Apache Camel - Dead Letter Channel - enrich message
body: <p>I'm using deadLetterChannel to take care of exceptions and send them to the error queue.</p>
  
  <pre><code>errorHandler(deadLetterChannel(QUEUE_ERROR).maximumRedeliveries(3).redeliveryDelay(2000));
  </code></pre>
  
  <ol>
  <li>Is it possible to enrich the message with additional message headers? Or do i have to use onException for it? </li>
  </ol>