<ruleset name="Posteo">
  <target host="posteo.de" />
  <target host="lists.posteo.de" />
  <target host="m.posteo.de" />
  <target host="www.posteo.de" />

  <rule from="^http://(?:www\.|m\.)?posteo\.de/" to="https://posteo.de/" />
  <rule from="^http://lists\.posteo\.de/" to="https://lists.posteo.de/" />
</ruleset>
