diff --git a/guide.html b/guide.html
index e660d541..a909fe24 100644
--- a/guide.html
+++ b/guide.html
@@ -126,6 +126,8 @@
 			          <li><a href="#mail-users">Adding Email Addresses</a></li>
 			          <li><a href="#ssl">SSL Certificate</a></li>
 			          <li><a href="#dnssec">DNSSEC</a></li>
+			          <li><a href="#other">Other</a></li>
+			          <li><a href="#checks">Systems Checks</a></li>
 			        </ul>
 				</div>
     		</div>
@@ -354,6 +356,17 @@ cd mailinabox</pre>
 						<li>Backup your mail.</li>
 					</ul>
 
+					<h2 id="checks">Systems Checks</h2>
+
+					<p>If you want to double-check that your system is configured correctly, here are some tools:</p>
+
+					<ul>
+						<li>DNS: <a href="http://pingability.com/zoneinfo.jsp">pingability.com/zoneinfo</a></li>
+						<li>DKIM and SPF: <a href="http://www.brandonchecketts.com/emailtest.php">brandonchecketts.com/emailtest</a></li>
+						<li>SSL: <a href="https://www.ssllabs.com/ssltest/analyze.html">ssllabs.com</a></li>
+					</ul>
+
+					<p>There are also Python scripts in the <code>tests</code> directory on github for automated testing.</p>
 
 					<div class="hidden-xs" style="height: 200px"> </div>