Cloudflare DevelopersCD
Cloudflare Developers•3y ago
kingmesal

Cloudflare Images Custom Domains - BUG?

BUG ALERT 🪲

I see in the docs https://developers.cloudflare.com/images/cloudflare-images/serve-images/serve-images-custom-domains/ it says:
Serve images from custom domains

I have use cases that are failing with a 403 when using CF Images service via this URL format:
https://mycustom.domain/cdn-cgi/imagedelivery/

Details:
  1. I have my sites in pages.
  2. I have a bunch of images stored in images.
  3. I know the problem has to do with DNS (custom domains).
    4 I have a 2 custom domains that this URL path works just fine
    One of the two is a CNAME from another DNS provider. All good. One is CNAME flattening in the same CF account.
    4 It does not work 2 of the custom domains
    Both DNS are managed in other cloudflare accounts with CNAME flattening and one example with subdomain CNAMEs pointing at the pages.dev project.
  4. If I use the pages.dev url of my pages projects all the images load just fine.
  5. All the SSL certificates are setup, valid, enabled...
Some custom domains working and other failing, but the most baffling part is the case where the subdomain managed in another DNS provider works. But those managed via other cloudflare accounts do not.

Is this a 🐛 ❓
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