15.4.1

Fix

• Disable fm/smtp-notify because of reboot issue. [Thomas Merkel]

  We detected an issue that the server isn't stopped somehow during
  reboot of the zone. This error happen sometimes and is currenlty not all
  time reproducible. But the zone will freeze and could only be restarted by
  restarting the global zone. For that reason we disabled the notificateion
  service again.

  wiedi/deploy-zone@4ad54bd