via @jedisct1
via https://community.letsencrypt.org/t/caa-setup-for-lets-encrypt/9893/8
via http://ajustetitre.tumblr.com/post/156159989290/il-r%C3%A9ussit-%C3%A0-atteindre-le-dernier-rang-dune
via @lehollandaisv
