diff --git a/config/mail.php b/config/mail.php
index 5201bb76..54299aab 100644
--- a/config/mail.php
+++ b/config/mail.php
@@ -42,6 +42,7 @@
             'username' => env('MAIL_USERNAME'),
             'password' => env('MAIL_PASSWORD'),
             'timeout' => null,
+            'auth_mode' => null,
         ],
 
         'ses' => [