> Thus my question is how can an automatic system within LISTSERV be > developed. One way to narrow the risks is that LISTSERV automatically > searches for the domain origin (e.g in my case @swipnet.se) or IP nr > in the concealed header of the sent message. This would narrow the > ability of such messages to pass through. I am not a software > programme and so I ask - Is this possible ? I am not a programmer either Jacky, but I'm sure something along those lines are certainly possible. Feasable without effecting performance is another question. > or is this a layman's dream ? For now, I would say yes. The present system by your own admission works very well and it is fool-proof. -- John Lyon L-Soft international, Inc. http://www.lsoft.com