This is not MTOM: Content-Type: text/xml; charset=UTF-8; type="text/xml"; Content-Transfer-Encoding: binary Content-ID: <[email protected]>
That's not an MTOM message. See http://en.wikipedia.org/wiki/XML-binary_Optimized_Packaging for what one of those looks like. Rather, it appears that something has discarded the HTTP headers that should proceed your XML.
