sub hook_quit {
  my $qp = shift->qp;

  # if she talks EHLO she is probably too sophisticated to enjoy the
  # fun, so skip it.
  return (DECLINED) if ($qp->connection->hello || '') eq "ehlo";

  my $fortune = '/usr/games/fortune';
  return DECLINED unless -e $fortune;

  # local %ENV = ();

  my @fortune = `$fortune -s`;
  @fortune = map { chop; s/^/  \/ /; $_ } @fortune;
  $qp->respond(221, $qp->config('me') . " closing connection.", @fortune);
  return DONE;
}