diff --git a/data/web/autodiscover.php b/data/web/autodiscover.php
index 28819f567..323f89e78 100644
--- a/data/web/autodiscover.php
+++ b/data/web/autodiscover.php
@@ -1,7 +1,29 @@
 <?php
-require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/prerequisites.inc.php';
+require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/lib/vendor/autoload.php';
+require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/vars.inc.php';
+if(file_exists('inc/vars.local.inc.php')) {
+  include_once 'inc/vars.local.inc.php';
+}
+require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/functions.inc.php';
+require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/functions.auth.inc.php';
+require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/sessions.inc.php';
+$default_autodiscover_config = $autodiscover_config;
 $autodiscover_config = array_merge($default_autodiscover_config, $autodiscover_config);
 
+// Redis
+$redis = new Redis();
+try {
+  if (!empty(getenv('REDIS_SLAVEOF_IP'))) {
+    $redis->connect(getenv('REDIS_SLAVEOF_IP'), getenv('REDIS_SLAVEOF_PORT'));
+  }
+  else {
+    $redis->connect('redis-mailcow', 6379);
+  }
+}
+catch (Exception $e) {
+  exit;
+}
+
 error_reporting(0);
 
 $data = trim(file_get_contents("php://input"));
@@ -30,6 +52,10 @@ $opt = [
   PDO::ATTR_EMULATE_PREPARES   => false,
 ];
 $pdo = new PDO($dsn, $database_user, $database_pass, $opt);
+
+// Init Identity Provider
+$iam_provider = identity_provider('init');
+
 $login_user = strtolower(trim($_SERVER['PHP_AUTH_USER']));
 $login_pass = trim(htmlspecialchars_decode($_SERVER['PHP_AUTH_PW']));