ReRoute URL to SubDomain with Wefblow and ?cloudflare?

We migrated a site from a local server to webflow. The client used their server to host images for their e-mail signatures.

so for example: was pointing to an image used in their e-mail footer.

Now that webflow does not allow controlling the urls for images uploaded to the asset manager, we can’t rely on that path anymore.

We would like to drop the files onto a server under the subdomain and reroute all request from* to*

We tried this tutorial for cloudflare. but could not get it to work.

Does webflow interfere with that setup?

PS: Yes, we know we could just change the e-mail signature. But our client has a lot of workers and the would all have to change to the new one.

Kind regards,