Let's Debug

Test result for doyban.com using http-01

A fatal issue occured during the DNS lookup process for doyban.com/CAA.
DNS response for doyban.com had fatal DNSSEC issues: validation failure <doyban.com. CAA IN>: No DNSKEY record from 91.231.140.6 for key doyban.com. while building chain of trust
A fatal issue occured during the DNS lookup process for doyban.com/A.
DNS response for doyban.com had fatal DNSSEC issues: validation failure <doyban.com. A IN>: No DNSKEY record from 91.231.140.6 for key doyban.com. while building chain of trust
A fatal issue occured during the DNS lookup process for doyban.com/AAAA.
DNS response for doyban.com had fatal DNSSEC issues: validation failure <doyban.com. AAAA IN>: No DNSKEY record from 91.231.140.7 for key doyban.com. while building chain of trust
Fatal
No valid A or AAAA records could be ultimately resolved for doyban.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.
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for doyban.com is: com
Debug
The current status.io status for Let's Encrypt
Operational

Submitted May 23 08:11:10 2018. Sat in queue for 2ms. Completed in 3s. Hide verbose information.