NexcloudPi: I have recently updated duckdns.org certificates last week:
user@iMac scripts % openssl s_client -connect downwind.duckdns.org:443 -servername downwind.duckdns.org 2>/dev/null | openssl x509 -noout -dates
notBefore=Jul 14 05:33:08 2025 GMT
notAfter=Oct 12 05:33:07 2025 GMT
Intermittent Error message:
Safari Can’t Find the Server. Safari can’t open the page “https://downwind.duckdns.org” because Safari can’t find the server “downwind.duckdns.org”
Tests performed confirm intermittent responses:
[user@iMac scripts % nc -zv downwind. duckdns. org 443
Connection to downwind. duckdns.org port 443 [tcp/https] succeeded!
[user@iMac scripts % nc -zv downwind. duckdns. org 443
nc: getaddrinfo: nodename nor servname provided, or not known
[user@iMac scripts % nc -zv downwind. duckdns.org 443
Connection to downwind.duckdns.org port 443 [tcp/https] succeeded!
What is the root cause of the problem? OR
What additional test can be performed?