Can anyone suggest search terms to find information about non members
posting to a list probably using a forged address.

My list is set to
send = private
subscription = by owner

Yesterday we received a post from a non member and an error message saying
that "member" is being monitored and showing the address that is not
subscribed.

I have searched spam, nonmember post, forgery - can't find the info and I'm
sure you have discussed this.

Janis