A fatal issue occurred during the DNS lookup process for marines.mil/A.
DNS response for marines.mil/A did not have an acceptable response code: SERVFAIL
A fatal issue occurred during the DNS lookup process for marines.mil/AAAA.
DNS response for marines.mil/AAAA did not have an acceptable response code: SERVFAIL
A fatal issue occurred during the DNS lookup process for marines.mil/CAA.
DNS response for marines.mil had fatal DNSSEC issues: validation failure <marines.mil. CAA IN>: No DNSKEY record for key marines.mil. while building chain of trust
No valid A or AAAA records could be ultimately resolved for marines.mil. 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.