I trying to issue a certificate for dndsofia5.bg.global-imi.com, but get a DNS error.
DNS is set up and answers external requests.
My domain is:
I ran this command:
certbot --apache -d dndsofia5.bg.global-imi.com
It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator apache, Installer apache
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for dndsofia5.bg.global-imi.com
Waiting for verification…
Cleaning up challenges
Failed authorization procedure. dndsofia5.bg.global-imi.com (http-01): urn:ietf:params:acme:error:dns :: DNS problem: SERVFAIL looking up A for dndsofia5.bg.global-imi.com
The following errors were reported by the server:
My web server is (include version):
The operating system my web server runs on is (include version):
Ubuntu 18.04 LTS
I can login to a root shell on my machine:
I’m using a control panel to manage my site:
Thanks in advance for your help !