Hello,

Your certificate (or certificates) for the names listed below will expire in 10 days (on 29 Jul 18 21:31 +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.

matrix.ffnw.de riot.ffnw.de

For any questions or support, please visit https://community.letsencrypt.org/. Unfortunately, we can't provide support by email.

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Regards, The Let's Encrypt Team