On Wed, Apr 9, 2014 at 6:27 PM, John R. Levine <jo...@iecc.com> wrote: >>> The most "sane" out-of-mind response should only be sent *if* the >>> out-of-mind person is named explicitly as a recipient in the RFC822 >>> To: header. Anything To: somelist@somehost does not qualify :) > > > This highly effective trick was in the procmail example vacation script in > 1991, and doubtless goes back much farther than that. It's a little > dismaying to hear that there are still people writing autoresponders who > don't know about it.
what is procmail?
