Update: We managed to switch DNS server back to Cloudflare and this resolved the issue. Old OVH DNS records had a TTL of 1h.
What We Learned / How We’ll Avoid This in the Future
This incident highlighted key weaknesses in our domain and DNS management processes, particularly during registrar/operator transitions. To avoid similar issues in the future, we are implementing the following improvements:
- Avoid default DNS resets: We will ensure that when changing domain operators or making...