CNAME not working after changing nameserver

Website, Application, Performance DNS & Network
1

Hello,

CONTEXT
I have a domain jancoomans.be registered vimexx.be, and have changed the nameserver to Cloudflare with the following guide: https://developers.cloudflare.com/dns/zone-setups/full-setup/setup/ . The DNSSEC is active and I see Web Traffic in the domain settings, so I think I’ve done so successfully.

Next I wanted to add a CNAME that points to a website I’ve made under the following URL: https://blog-frontend-production-2682.up.railway.app/ . This however is not working. jancoomans.be doesn’t point to any website and returns an error in the browser.

The record would look like this

image
image1257×146 7.75 KB

What I expected to happen:
I expected to be able to visit my website with the URL from my domain https://www.jancoomans.be

Question:
Am I missing something? What am I supposed to do to make this work?

2

Have you added a custom domain name in railway?

3

Welcome to the Cloudflare Community. :logodrop:

You appear to to have skipped over setting up the www.jancoomans.be hostname in Railway. When I request www.jancoomans.be from the server at blog-frontend-production-2682.up.railway.app using curl it returns the following error:

* SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
* ALPN, server accepted to use h2
* Server certificate:
*  subject: CN=*.up.railway.app
*  start date: Feb  8 18:16:04 2023 GMT
*  expire date: May  9 18:16:03 2023 GMT
*  subjectAltName does not match www.jancoomans.be
* SSL: no alternative certificate subject name matches target host name 'www.jancoomans.be'
5

Oh I see. It’s solved now. I actually did add the custom domain to my railway project. But since the orange cloud proxy on the CNAME was active, I also had to change the SSL/TSL of my domain to “full”.

Thank you for your reply.

1 Like
6

This topic was automatically closed 15 days after the last reply. New replies are no longer allowed.