diff --git a/mail_outbound_static/models/ir_mail_server.py b/mail_outbound_static/models/ir_mail_server.py
index e002b4658..83502a129 100644
--- a/mail_outbound_static/models/ir_mail_server.py
+++ b/mail_outbound_static/models/ir_mail_server.py
@@ -34,7 +34,7 @@ class IrMailServer(models.Model):
                 email_from = mail_server.smtp_from
 
             message.replace_header('From', email_from)
-            bounce_alias = self.env['ir.config_parameter'].get_param(
+            bounce_alias = self.env['ir.config_parameter'].sudo().get_param(
                 "mail.bounce.alias")
             if not bounce_alias:
                 # then, bounce handling is disabled and we want