The domain uptime.rejsemus.dk 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-
uptime.rejsemus.dk has multiple IP addresses in its DNS records. While they appear to be accessible on the network, we have detected that they produce differing results when sent an ACME HTTP validation request. This may indicate that some of the IP addresses may unintentionally point to different servers, which would cause validation to fail.
[Address=2606:4700:3033::6815:52e3,Address Type=IPv6,Server=cloudflare,HTTP Status=200] vs [Address=104.21.82.227,Address Type=IPv4,Server=cloudflare,HTTP Status=404]
uptime.rejsemus.dk has multiple IP addresses in its DNS records. While they appear to be accessible on the network, we have detected that they produce differing results when sent an ACME HTTP validation request. This may indicate that some of the IP addresses may unintentionally point to different servers, which would cause validation to fail.
[Address=2606:4700:3033::6815:52e3,Address Type=IPv6,Server=cloudflare,HTTP Status=200] vs [Address=172.67.164.153,Address Type=IPv4,Server=cloudflare,HTTP Status=404]
Requests made to the domain
Request to: uptime.rejsemus.dk/2606:4700:3033::6815:52e3, Result: [Address=2606:4700:3033::6815:52e3,Address Type=IPv6,Server=cloudflare,HTTP Status=200], Issue:
Trace:
@0ms: Making a request to http://uptime.rejsemus.dk/.well-known/acme-challenge/letsdebug-test (using initial IP 2606:4700:3033::6815:52e3)
@0ms: Dialing 2606:4700:3033::6815:52e3
@213ms: Server response: HTTP 200 OK
Request to: uptime.rejsemus.dk/2606:4700:3030::ac43:a499, Result: [Address=2606:4700:3030::ac43:a499,Address Type=IPv6,Server=cloudflare,HTTP Status=200], Issue:
Trace:
@0ms: Making a request to http://uptime.rejsemus.dk/.well-known/acme-challenge/letsdebug-test (using initial IP 2606:4700:3030::ac43:a499)
@0ms: Dialing 2606:4700:3030::ac43:a499
@243ms: Server response: HTTP 200 OK
Request to: uptime.rejsemus.dk/104.21.82.227, Result: [Address=104.21.82.227,Address Type=IPv4,Server=cloudflare,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://uptime.rejsemus.dk/.well-known/acme-challenge/letsdebug-test (using initial IP 104.21.82.227)
@0ms: Dialing 104.21.82.227
@246ms: Server response: HTTP 404 Not Found
Request to: uptime.rejsemus.dk/172.67.164.153, Result: [Address=172.67.164.153,Address Type=IPv4,Server=cloudflare,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://uptime.rejsemus.dk/.well-known/acme-challenge/letsdebug-test (using initial IP 172.67.164.153)
@0ms: Dialing 172.67.164.153
@210ms: Server response: HTTP 404 Not Found
A and AAAA records found for this domain
uptime.rejsemus.dk. 0 IN A 104.21.82.227
uptime.rejsemus.dk. 0 IN A 172.67.164.153
uptime.rejsemus.dk. 0 IN AAAA 2606:4700:3033::6815:52e3
uptime.rejsemus.dk. 0 IN AAAA 2606:4700:3030::ac43:a499
Challenge update failures for uptime.rejsemus.dk in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/6445529743
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": 2606:4700:3033::6815:52e3: Invalid response from http://uptime.rejsemus.dk/.well-known/acme-challenge/pXN_CYoNThVeQVrFpKlwgzgInUbjyuu0kSqt4Bo2Ly4: 404
The IANA public suffix is the TLD of the Registered Domain
The TLD for uptime.rejsemus.dk is: dk
The current status.io status for Let's Encrypt
Operational