Camel supports the Dead Letter Channel from the EIP patterns using the DeadLetterChannel processor which is an Error Handler. For more information about the DeadLetterChannel processor, refer to its corresponding Camel-core API documentation on http://camel.apache.org/.
The major difference between Dead Letter Channel and the Default Error Handler is that Dead Letter Channel has a dead letter queue that whenever an Exchange could not be processed is moved to. It will always move failed exchanges to this queue.
Notice: You can adjust this behavior of whether the client should be notified or not with the handled option.