Do you have any documentation or understanding of the streaming protocol that the Dreambox 800se can consume? Identify this and let us know what does and does not work. Once we establish how the device will consume a stream, then we can work on the optimal Wowza configuration for your workflow.
It sounds like you want to publish a stream from the Dreambox 800se to Wowza. Is that even possible? It would be my assumption that you have a separate source and encoder that's sending a publishing stream to Wowza and that you simply need to distribue this live media stream to your Dreambox 800se, iOS, web clients, etc.