1 files changed, 3 insertions, 1 deletions
diff --git a/index.php b/index.php
index 440a245c5..21d5d859a 100644
--- a/index.php
+++ b/index.php
@@ -154,7 +154,9 @@ else if ($RCMAIL->task != 'login' && $_SESSION['user_id'] && $RCMAIL->action !=
 
 // not logged in -> show login page
 if (empty($RCMAIL->user->ID)) {
-  if ($OUTPUT->ajax_call)
+  if ($RCMAIL->action == 'keep-alive')
+    $OUTPUT->send();
+  else if ($OUTPUT->ajax_call)
     $OUTPUT->redirect(array(), 2000);
 
   if (!empty($_REQUEST['_framed']))