Yes, I can only imagine how much junk you have to read through... FWIW, you can set up the listserv so that it simply discards stuff from unsubscribed posters. This would fix LAA as well and as such it seems to me like a reasonable compromise since spammers in most cases are not subscribed to the list and if a poster really wants to post on a particular list they might as well subscribe to it. I am sure there may be some who would disagree with this kind of a policy and thus I think it is ultimately up to you to decide what you deem best solution/compromise. Best wishes, Ico