Added back in debugging response header

advanced/lighttpd.conf

@@ -37,3 +37,9 @@ $HTTP["url"] =~ "^/admin/" {
 	# Create a response header for debugging using curl -I
 	setenv.add-response-header = ( "X-Pi-hole" => "The Pi-hole Web interface is working!" )
 }
+
+# If the URL does not start with /admin, then it is a query for an ad domain
+$HTTP["url"] =~ "^(?!/admin)/.*" {
+	# Create a response header for debugging using curl -I
+	setenv.add-response-header = ( "X-Pi-hole" => "A black hole for Internet advertisements." )
+}