Hello, Your certificate (or certificates) for the names listed below will expire in 10 days (on 28 May 19 06:41 +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. gitlab.federez.net octogon.federez.net 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=972ba6cd87c142749b… You may need to update your client to the latest version in case it is still using the deprecated TLS-SNI-01 validation method. https://community.letsencrypt.org/t/february-13-2019-end-of-life-for-all-tl… Step-by-step instructions for updating Certbot are here: https://community.letsencrypt.org/t/how-to-stop-using-tls-sni-01-with-certb… Regards, The Let's Encrypt Team