IÃ‚Â´ve got a bit of a problem with Webservice-Responses. A Client sends in MTOM-Format and needs an answer in MTOM-Format. IÃ‚Â´ve tried to change the BindingType to SOAP12HTTP_MTOM_BINDING. This changes the Webservice-Response to Soap 1.2, so this kind of works. But it still isnÃ‚Â´t in MTOM-Format. I think this is the result of the absence of an Base64-coded element in the webservice-response. Is there a way to force MTOM on a response?