Wildcard Domain stuck on SSL Validation / 525 Error in Cloudflare
nunommc
PROOP

3 months ago

Hi team! We're running into an issue with a wildcard domain deployment.

The Setup:

  • Root Domain: e-maktab.co.uk (Working perfectly)
  • Wildcard Domain: *.e-maktab.co.uk (Returning 525 SSL Handshake Failed via Cloudflare)
  • Cloudflare SSL: Set to "Full"

Railway Status: There is a warning icon next to the wildcard domain in the Settings > Domains panel, but no extra info on hover.

The Issue:

Pages behind the wildcard (like our multi-tenant subdomains) are failing the SSL handshake. Our root domain works, but anything on the wildcard doesn't. This started happening after our last deployment.

Questions:

Have there been any recent changes to how wildcard certificates are provisioned or validated?

Could you check if the certificate generation is stuck on the backend for this service?

Solved

4 Replies

nunommc
PROOP

3 months ago

We just got it fixed. We had to remove the custom domain, and configure a new one and redo it on cloudflare. Now it works


nunommc
PROOP

3 months ago

Do you have any idea why this happened?


douglasjarquin
PRO

3 months ago

I had the same exact thing happen. I think Railway may have missed an if statement in their new "TXT verification for trusted domains" feature (https://railway.com/changelog/2025-02-06-magic-domains).

If anyone is experiencing Cloudflare SSL 525 errors, and you DO NOT have 3 records configured for your custom domain (2 CNAME, 1 TXT), then delete and re-add your custom domain to get the new railway verify TXT record.


2 months ago

Glad it is all solved now. As for why it happened, it is hard to say for sure without the broken domain to look into. Please re-open if it happens again.


Status changed to Solved jr 2 months ago


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