Set the correct Cloudflare SSL/TLS encryption mode for a Railway custom domain
domain: docs.railway.com · 4 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
If your Cloudflare record is proxied with the orange cloud in front of a Railway custom domain, set the SSL/TLS encryption mode to Full
In the Cloudflare dashboard go to SSL/TLS then Overview and select Full
Enable Universal SSL under SSL/TLS then Edge Certificates when using wildcard subdomains
Understand that Railway uses the default up.railway.app certificate for Cloudflare to Railway traffic when it cannot issue a certificate for the proxied domain
Known gotchas
Full (Strict) will not work as intended; Railway docs explicitly warn to use Full and not Full (Strict)
With proxying enabled you cannot use a domain deeper than a first level subdomain without Cloudflare Advanced Certificate Manager
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