I'm running ISPConfig 3.1 latest for my own domains. Having a multi server setup: 1 'Main' server with all services 1 Second server wich is a mirror of the 1st 1 Second DNS server with dns only All seems to be working fine, thanks for the great tutorials! I've got about 4 domains on ISPconfig. For 3 domains, lets encrypt works fine. For the main domain, i cant get the certificate verified. It sees the website, no owner information is supplied but verification is niet specified. https://www.tsictdiensten.nl Code: 2017-01-20 07:45:10,580:DEBUG:certbot.reporter:Reporting to user: Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/tsictdiensten.nl/fullchain.pem. Your cert will expire on 2017-04-20. To obtain a new or tweaked version of this certificate in the future, simply run letsencrypt-auto again. To non-interactively renew *all* of your certificates, run "letsencrypt-auto renew"