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

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Regards, The Let's Encrypt Team