OTF n8n Can't Connect

## Description `automation.optimified.com` returned "site can't be reached" after the `optimified.com` domain was moved to a new Cloudflare account. The default Railway URL (`primary-production-54118.up.railway.app`) worked fine — confirming the n8n service itself was healthy. ## Steps to Reproduce Same root cause as the Mattermost issue — domain transfer to new Cloudflare account broke custom domain DNS routing for all Railway services. ## Resolution 1. Added CNAME for `automation` pointing to `esqu2f3s.up.railway.app` 2. Added `_railway-verify` TXT record for domain verification 3. Selected port 5678 in Railway custom domain settings 4. Set CNAME to DNS-only (grey cloud) for Railway verification 5. Once verified and working, flipped back to Proxied Service restored on 2026-03-24. ## Related - Tech asset: [[otf-n8n]] - Related issue: [[otf-mattermost-cant-connect]]