A test authorization for dufoo.com.mx to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
DNS problem: query timed out looking up A for dufoo.com.mx
Requests made to the domain
Request to: dufoo.com.mx/129.213.50.42, Result: [Address=129.213.50.42,Address Type=IPv4,Server=nginx/1.12.2,HTTP Status=200], Issue:
Trace:
@0ms: Making a request to http://dufoo.com.mx/.well-known/acme-challenge/letsdebug-test (using initial IP 129.213.50.42)
@0ms: Dialing 129.213.50.42
@18ms: Server response: HTTP 200 OK
A and AAAA records found for this domain
dufoo.com.mx. 0 IN A 129.213.50.42
Challenge update failures for dufoo.com.mx in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/52430267
acme: error code 400 "urn:ietf:params:acme:error:dns": DNS problem: query timed out looking up A for dufoo.com.mx
The IANA public suffix is the TLD of the Registered Domain
The TLD for dufoo.com.mx is: com.mx
The current status.io status for Let's Encrypt
Operational