Merge branch '4.4' into 5.4

* 4.4:
  [Mailer] Fix logic

Author: fabpot

Transport/Smtp/EsmtpTransport.php

@@ -133,6 +133,8 @@ private function callHeloCommand(): array
                 if (!$ex->getCode()) {
                     throw $e;
                 }
+
+                throw $ex;
             }
         }