With JBossWS you can use either MTOM or SOAP Attachments (SwA), WS-Attachments (DIME) is not supported. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4119280#4119280 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4119280