The domain cackle.us is being served through Cloudflare CDN. Any Let's Encrypt certificate installed on the origin server will only encrypt traffic between the server and Cloudflare. It is strongly recommended that the SSL option 'Full SSL (strict)' be enabled.
https://support.cloudflare.com/hc/en-us/articles/200170416-What-do-the-SSL-options-mean-
Requests made to the domain
Request to: cackle.us/2606:4700:3037::ac43:a039, Result: [Address=2606:4700:3037::ac43:a039,Address Type=IPv6,Server=cloudflare,HTTP Status=301,Number of Redirects=1,Final HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://cackle.us/.well-known/acme-challenge/letsdebug-test (using initial IP 2606:4700:3037::ac43:a039)
@0ms: Dialing 2606:4700:3037::ac43:a039
@22ms: Server response: HTTP 301 Moved Permanently
@22ms: Received redirect to https://cackle.us/.well-known/acme-challenge/letsdebug-test
@22ms: Dialing 2606:4700:3037::ac43:a039
@73ms: Server response: HTTP 404 Not Found
Request to: cackle.us/2606:4700:3036::6815:5ac2, Result: [Address=2606:4700:3036::6815:5ac2,Address Type=IPv6,Server=cloudflare,HTTP Status=301,Number of Redirects=1,Final HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://cackle.us/.well-known/acme-challenge/letsdebug-test (using initial IP 2606:4700:3036::6815:5ac2)
@0ms: Dialing 2606:4700:3036::6815:5ac2
@20ms: Server response: HTTP 301 Moved Permanently
@20ms: Received redirect to https://cackle.us/.well-known/acme-challenge/letsdebug-test
@20ms: Dialing 2606:4700:3036::6815:5ac2
@75ms: Server response: HTTP 404 Not Found
Request to: cackle.us/172.67.160.57, Result: [Address=172.67.160.57,Address Type=IPv4,Server=cloudflare,HTTP Status=301,Number of Redirects=1,Final HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://cackle.us/.well-known/acme-challenge/letsdebug-test (using initial IP 172.67.160.57)
@0ms: Dialing 172.67.160.57
@19ms: Server response: HTTP 301 Moved Permanently
@19ms: Received redirect to https://cackle.us/.well-known/acme-challenge/letsdebug-test
@19ms: Dialing 172.67.160.57
@69ms: Server response: HTTP 404 Not Found
Request to: cackle.us/104.21.90.194, Result: [Address=104.21.90.194,Address Type=IPv4,Server=cloudflare,HTTP Status=301,Number of Redirects=1,Final HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://cackle.us/.well-known/acme-challenge/letsdebug-test (using initial IP 104.21.90.194)
@0ms: Dialing 104.21.90.194
@18ms: Server response: HTTP 301 Moved Permanently
@18ms: Received redirect to https://cackle.us/.well-known/acme-challenge/letsdebug-test
@18ms: Dialing 104.21.90.194
@62ms: Server response: HTTP 404 Not Found
A and AAAA records found for this domain
cackle.us. 0 IN A 172.67.160.57
cackle.us. 0 IN A 104.21.90.194
cackle.us. 0 IN AAAA 2606:4700:3037::ac43:a039
cackle.us. 0 IN AAAA 2606:4700:3036::6815:5ac2
Challenge update failures for cackle.us in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/2652212504
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": 2606:4700:3037::ac43:a039: Invalid response from https://cackle.us/.well-known/acme-challenge/nDgLKPKsjln94vdMLyOiX3Rn17B_olVWh3g11Gvvxr8: 404
1 Certificates contributing to rate limits for this domain
Serial: 400943935834496340650592577226451387910534
NotBefore: 2022-05-21 15:56:15 +0000 UTC
Names: [cackle.us www.cackle.us]