Are you using the http://www.w3.org/2003/05/soap/bindings/HTTP/?mtom=true binding ID in the @BindingType ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4177842#4177842 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4177842