Hello, i have domain:
I have set up dns record for this domain:
A doras.dev 126.96.36.199
But Cloudflare dns system always return 521
Server is working (you can check it by visit ip)
I also have domain:
Which have exact same A record
And its working!
Both of domains using Cloudflare SSL certs
so i don’t know what to do, any ideas what happening?
i updated dns record ~3 hours ago, so may be dns record aren’t update yet and that’s why i always see this error?
Well, the message is spot on, your server is not running on port 443.
You need to fix your server configuration and make sure it’s properly configured and responds with a valid certificate.
Thank you so much! You save my day
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