diff --git a/mail_environment/models/ir_mail_server.py b/mail_environment/models/ir_mail_server.py
index d4b6f2513..322fd51c9 100644
--- a/mail_environment/models/ir_mail_server.py
+++ b/mail_environment/models/ir_mail_server.py
@@ -27,7 +27,7 @@ def _server_env_fields(self):
         return mail_fields
 
     def _compute_default_authentication(self):
-        return "login"
+        self.update({"smtp_authentication": "login"})
 
     @api.model
     def _server_env_global_section_name(self):