Having a single system for all WG lists has the appeal that whatever process(es) handle the lists, it will be the same for all lists, so you don't have to figure out how N different lists are run. As a shameless plug, we have a free open source solution developed here which is widely used against spam/viruses and that could do the job, see http://www.mailscanner.info/ -- Tim _______________________________________________ IETF mailing list IETF@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf