I have DuckDNS set up for months and it works fine. But it start breaking a couple days ago ssl.SSLError: [SSL: SSLV3_ALERT_CERTIFICATE_UNKNOWN] sslv3 alert certificate unknown (_ssl.c:1056) 2019-04-18 19:26:40 ERROR (MainThread) [homeassistant.core] Error doing job: SSL handshake failed Traceback …

I had a similar issue about an hour ago. I couldn’t even access https://duckdns.org from my host computer (my hassio install is virtual). It wasn’t an issue with duckdns site as I could access fine from my work PC. I restarted HASS, no joy. I tried an ipconfig /flush dns on the host, still no joy. I…

What do you mean by ipconfig/flush dns? I want to give it a try

As my Hasio install is hosted on a Windows server running HyperV and this server was also unable to access https://mydomain.duckdns.org or even the main https://duckdns.org site I tried running command prompt and then command ipconfig /flushdns It will deped on your environment whether or not you c…

Your server is complaining about the ssl certificates. Perhaps your configuration has incorrect paths. What does that part of your configuration look like and what have you already tried to resolve the issue? We are here to help people solve issues, bot solve them for those who do not try first. I…

Restarting my VM’s host server worked for me. No changes to config between restarts

[chrome] Normal configuration, not sure why it is breaking and duck dns log is saying connected successfully. I have reinstalled the add-on but it don’t work.

[image] BlackBerry_pi: Normal configuration, not sure why it is breaking and duck dns log is saying connected successfully. I have reinstalled the add-on but it don’t work. So, do you see the certificate files in the ssl directory? I asked earlier. Your earlier log entries were complaining a…

Is the certificate expired? I think openssl on Linux can read a pem file with the key file.

Not sure, but I do use let’s encrypt to renew the certificate after it breaks But the let’s encrypt log show this: IMPORTANT NOTES: The following errors were reported by the server: Domain: mymysterydomain.duckdns.org Type: connection Detail: Fetching

Duck Dns Breaking

Configuration

BlackBerry_pi (Zing) May 8, 2019, 7:55am 15

You may find some solution here but neither of them worked for me. Maybe it will help you