diff --git a/odoo/addons/base/data/neutralize.sql b/odoo/addons/base/data/neutralize.sql
index 809e1958597..69cf3fcd091 100644
--- a/odoo/addons/base/data/neutralize.sql
+++ b/odoo/addons/base/data/neutralize.sql
@@ -2,6 +2,10 @@
 UPDATE ir_mail_server
    SET active = false;
 
+-- insert dummy mail server to prevent using fallback servers specified using command line
+INSERT INTO ir_mail_server(name, smtp_port, smtp_host, smtp_encryption, active, smtp_authentication)
+VALUES ('neutralization - disable emails', 1025, 'invalid', 'none', true, 'login');
+
 -- deactivate crons
 UPDATE ir_cron
    SET active = false