title: Is it possible to have a valid sub-subdomain with a wildcard certificate?
body: <p>Say I have the following domain:</p>
  
  <pre><code>example.com
  </code></pre>
  
  <p>I have a Wildcard SSL certificate for this domain. Subdomains like <code>test.example.com</code> validate properly. However, when I try to use a domain like <code>demo.test.example.com</code>, I get an error message in all major browsers:</p>
  
  <pre><code>demo.test.example.com uses an invalid security certificate.
  
  The certificate is only valid for the following names:
    *.example.com , example.com
  </code></pre>
  
  <p>Is it possible to use a wildcard certificate for a "sub-subdomain"?</p>