Virtualmin autoresponder utf8

The autoresponder is using iso-8859-1, yet it does a lot of crap with French and German special characters. How can one change that to utf8?


Subject: Autoreply to test
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset=iso-8859-1
Date: Fri, 22 May 2015 20:45:34 +0000 (UTC)

You email has been delivered, but the email address you have used will be obsolete soon. Please use instead of

Votre email a =C3=A9t=C3=A9 livr=C3=A9, mais l’adresse e-mail que vous avez utilis=C3=A9 ne sera pas valide tr=C3=A8s bient=C3=B4t. Par cons=C3=A9quent, utiliser =C3=A0 la place de s’il vous pla=C3=AEt.

Ihre E-Mail wurde zugestellt, jedoch wird die von Ihnen verwendete E-mail Adresse bald ung=C3=BCltig sein. Bitte benutzen Sie daher anstelle von