To implement confirmation on posting, simply add ',confirm' to the 'Send=' keyword statement in your list header. When the server receives a message for the list address, it will send a confirmation request (Did you really send this?) to the sender address. If the recipient of the confirmation request responds in an affirmative manner, the message is distributed to the list subscribers. This will significantly reduce forged messages of all sorts - spam, viruses, etc. It will not completely eliminate forged messages, because there will always be a few idiots who say "Yes", no matter what you ask them. This change has no effect on the handling of subscription requests. -- Paul Russell Senior Systems Administrator OIT Messaging Services Team University of Notre Dame