Ok, I understood that the main problem is that I'm trying to send back to the client, with a server-response, the attachment. Instead, this code: SOAPMessageContext msgContext = (SOAPMessageContext)context.getMessageContext(); gives back the request message, not the response one. Does anyone know how to access the response message? Or what should I do to attach something to the response message, in general? I searched everywhere but I found nothing about it! Thanks very much for your help! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4111438#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...