diff --git a/src/app/email/controllers/EmailController.php b/src/app/email/controllers/EmailController.php
index 5ae418b5e4f17b7ca5b2f36de23229d9b9e4fe29..3731e83854a955ede59f736fc6c86012567d6b00 100644
--- a/src/app/email/controllers/EmailController.php
+++ b/src/app/email/controllers/EmailController.php
@@ -256,6 +256,7 @@ class EmailController
 
             $phpmailer->Host = $configuration['host'];
             $phpmailer->Port = $configuration['port'];
+            $phpmailer->SMTPAutoTLS = false;
             if (!empty($configuration['secure'])) {
                 $phpmailer->SMTPSecure = $configuration['secure'];
             }