Updates to the HSTS preload page.

views/docs/dns-hstspreload.twig

@@ -7,13 +7,15 @@
 
   <p><a href="https://gitlab.lelux.fi/TelcoDB/hsts-preload-dns">The source code is available on GitLab</a>.</p>
 
+
   <h2>Technical details</h2>
 
-  <p>The service is available under <code>chromium.hstspreload.lelux.fi</code>.</p>
+  <p>The service is available under <code>chromium.hstspreload.lelux.fi</code> and serves the <a href="https://github.com/chromium/chromium/blob/master/net/http/transport_security_state_static.json">Chromium HSTS preloading list</a>.</p>
 
   <p>A query returns <code>127.0.0.42</code> if the domain is HSTS preloaded.
     If it is not preloaded, <a href="https://tools.ietf.org/html/rfc8020">NXDOMAIN</a> is returned.</p>
 
+
   <h3>Example</h3>
 
   <pre><code>$ dig +short <a href="/dns/httpforever.com.chromium.hstspreload.lelux.fi"
@@ -21,14 +23,16 @@
 $ dig +short <a href="/dns/mail.google.com.chromium.hstspreload.lelux.fi" class="text-dark">mail.google.com.chromium.hstspreload.lelux.fi
 <a class="text-dark" href="/ip/127.0.0.42">127.0.0.42</a></code></pre>
 
+
   <h3>Guidelines</h3>
 
   <ul>
-    <li>We recommend you to self-host the preloading list, if possible.</li>
-    <li>No warranty of any kind is provided.</li>
+    <li>No warranty or <a href="https://en.wikipedia.org/wiki/Service-level_agreement">SLA</a> of any kind is provided, however we have <a href="/dns/hstspreload.lelux.fi">multiple</a> authoritative nameservers.</li>
+    <li>If you would be interested in hosting an authoritative nameserver for the HSTS preload DNS list, <a href="/about/#contact">contact us</a>. However, please note that the list contains hundreds of thousands of records.</li>
+    <li>Please use a caching resolver such as <a href="https://nlnetlabs.nl/projects/unbound/">Unbound</a>.</li>
   </ul>
 
-  <hr>
 
+  <hr>
   <p><a href="/docs/">Go back to documentation</a></p>
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