If you have an external proxy like Cloudflare or AWS CloudFront in front of your Vercel deployment, you must configure it properly to avoid conflicts with Vercel’s domain verification and SSL certificate provisioning. Improper proxy configuration can prevent Vercel from provisioning Let’s Encrypt SSL certificates and cause domain verification failures. See the supported providers in the Vercel documentation.Documentation Index
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Required path allowlist
Your external proxy must allow traffic to these specific paths without blocking, redirecting, or heavily caching:/.well-known/acme-challenge/*- Required for Let’s Encrypt certificate verification/.well-known/vercel/*- Required for Vercel domain verification/mintlify-assets/_next/static/*- Required for static assets
Header forwarding requirements
Ensure that your proxy correctly forwards theHOST header. Without proper header forwarding, verification requests fail.
Testing your proxy setup
To verify your proxy is correctly configured:- Test that
https://[yourdomain].com/.well-known/vercel/returns a response. - Ensure SSL certificates are provisioning correctly in your Vercel dashboard.
- Check that domain verification completes successfully.