diff --git a/index.php b/index.php
new file mode 100644
index 00000000..23851203
--- /dev/null
+++ b/index.php
@@ -0,0 +1,9 @@
+<html>
+<head>
+    <title>Postfix Admin</title>
+</head>
+<body>
+    <p>The Postfix Admin directory layout changed.</p>
+    <p>Please update your webserver config so that the DocumentRoot or Alias points to the directory "public".</p>
+</body>
+</html>
