Hello, Your certificate (or certificates) for the names listed below will expire in 20 days (on 30 Aug 18 21:48 +0000). Please make sure to renew your certificate before then, or visitors to your website will encounter errors. We recommend renewing certificates automatically when they have a third of their total lifetime left. For Let's Encrypt's current 90-day certificates, that means renewing 30 days before expiration. See https://letsencrypt.org/docs/integration-guide/ for details. lists.ffnw.de pfa.ffnw.de For any questions or support, please visit https://community.letsencrypt.org/. Unfortunately, we can't provide support by email. If you are receiving this email in error, unsubscribe at http://mandrillapp.com/track/unsub.php?u=30850198&id=798becd4268f4b768db0ab9feee14d77.ASoG9xqfEug89um4JoJs0hEKMgQ%3D&r=https%3A%2F%2Fmandrillapp.com%2Funsub%3Fmd_email%3Dadmin%2540ffnw.de Regards, The Let's Encrypt Team