Getting error while enable the certificate for site

We have followed the above link:

Success: wget
chmod a+x certbot-auto

But, getting the error while: $ ./certbot-auto

We are getting the below error:

Failed authorization procedure. (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: DNS problem: NXDOMAIN looking up A for

Please let us know the steps to update the certificate.

That’s because there’s no such domain as known. without the www on the other hand:


So: probably you’ve got your Apache configured to listen to the hostname too, but your DNS server(s) don’t know it…

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