> > The cookie for confirmation is in the subject field so
> > quoted printable transfert encoding and crasy multipart/alternative
> > message structure do not affect reply confirmation.
> This is not a safe assumption to make. While it does keep
> multipart/alternative out of your hair, it does NOT mean you are safe from
> quoted-printable. I have seen quoted-printable subject fields:
> Subject: =?iso-8859-1?Q?Forms_4=2E5_-=3E_5=2E0_konverte
Of course Sympa decode header QP encoding (even if this is not really
usefull for subscription confirmation request which are pur 7bit strings).