A fatal issue occurred during the DNS lookup process for nsba.telsurcallcenter.com/CAA.
DNS response for nsba.telsurcallcenter.com/CAA did not have an acceptable response code: SERVFAIL
A fatal issue occurred during the DNS lookup process for nsba.telsurcallcenter.com/A.
DNS response for nsba.telsurcallcenter.com/A did not have an acceptable response code: SERVFAIL
A fatal issue occurred during the DNS lookup process for nsba.telsurcallcenter.com/AAAA.
DNS response for nsba.telsurcallcenter.com/AAAA did not have an acceptable response code: SERVFAIL
No valid A or AAAA records could be ultimately resolved for nsba.telsurcallcenter.com. This means that Let's Encrypt would not be able to to connect to your domain to perform HTTP validation, since it would not know where to connect to.
No A or AAAA records found.