Hi,
This is probably a basic Question, but: I’m currently tring to install Discourse onto my Ubunut Server but I always get this Error:
My DNS Setting seem correct:
How do I fix this?
Thanks in advance!
AI-generated summary
User Timothee_scheufler is encountering an error during Discourse installation on Ubuntu, indicating port 443 is not accessible, despite correct DNS settings via Cloudflare. Alexander advises disabling Cloudflare’s proxy (gray cloud) during installation, as the orange cloud hides the server’s real IP, preventing Discourse from verifying connectivity. Timothee_scheufler confirms using Cloudflare for domain-to-IP mapping, and after clarification from Alexander and a quoted reference from pfaffman, understands the need to keep the proxy off. Timothee_scheufler reports the issue persists after disabling the proxy, prompting Alexander to explain DNS changes may take minutes to 24 hours to propagate. Timothee_scheufler acknowledges and agrees to wait. The core fix is ensuring Cloudflare operates in DNS-only mode (gray cloud) during Discourse setup to allow direct server access on port 443.
Disabling the Proxy (and waiting a while) should fix the problem 
Because being behind Cloudflare Proxy doesn’t show the real IP of the server, so Discourse can’t verify correctly
Well I use Cloudflare to connect my Domain to the ip of the server
I see it, but the orange cloud must be disabled (gray) for the server’s subdomain (At least, at install time)
I try with the DNS Settings of my Domain Host
Ah, so cloudflare is fine unless I turn the orange cloud off?
I think you mean one of these:
-
It’s fine if you unless you turn the orange cloud on.
-
It’s fine if you the the orange cloud off.
-
It’s fine if you turn the gray cloud on.
Hm, I disabled the proxy at Cloudflare but it still doesn’t work…
It can take minutes, or even up to 24 hours for the change to take effect
Just wait 
Ahh, ok. Thank you very much - I’ll wait