Cloudflare return 521

Hello, i have domain:
doras.dev
I have set up dns record for this domain:
A doras.dev 23.105.246.140
But Cloudflare dns system always return 521
Server is working (you can check it by visit ip)

I also have domain:
doras.fun
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.

sitemeer.com/#https://23.105.246.140

You need to fix your server configuration and make sure it’s properly configured and responds with a valid certificate.

1 Like

Thank you so much! You save my day :heart_eyes:

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