I just had a client ask for something I haven't done. He wants emails from unknown users to be sent back with a "are you human" request they must respond to correctly. If they do, then they will be automatically added to a list of valid senders.
I have heard of this idea some time ago, but for the life of me can't remember what it was or how to implement it (and no I don't want to do this, but sometimes you have to do what the client demands, rather than what is really best for them). Terry Shows Nashville, TN -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
