diff --git a/tests/compose/webmail/01_ensure_admin_unreachable.sh b/tests/compose/webmail/01_ensure_admin_unreachable.sh
new file mode 100644
index 00000000..c4afc76a
--- /dev/null
+++ b/tests/compose/webmail/01_ensure_admin_unreachable.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+[[ `curl -I -so /dev/null -w "%{http_code}" http://localhost/` -ne 200 ]] && echo "The default page of rainloop hasn't returned 200!" >>/dev/stderr && exit 1
+[[ `curl -I -so /dev/null -w "%{http_code}" http://localhost/?admin` -ne 403 ]] && echo "The admin of rainloop is not disabled!" >>/dev/stderr && exit 1