Technical Resources

Cloudflare Blocking Let

Let's Encrypt Blocked by Cloudflare: When Strict SSL Causes Unrelated Domain to Display Executive Summary A business website with a functioning Let's Encrypt AutoSSL certificate system experienced unusual behavior after enabling Cloudflare's "Full (Strict)" SSL mode. Visitors attempting to reach the intended domain were intermittently shown a completely unrelated domain during the SSL configuration propagation window. This occurred despite zero references to the unrelated domain in the website's code, database, or configuration files. The development team discovered the issue through their Ove...