diff --git a/server/notification-providers/smtp.js b/server/notification-providers/smtp.js
index accee9ea..9b59ec09 100644
--- a/server/notification-providers/smtp.js
+++ b/server/notification-providers/smtp.js
@@ -13,7 +13,7 @@ class SMTP extends NotificationProvider {
             port: notification.smtpPort,
             secure: notification.smtpSecure,
             tls: {
-                rejectUnauthorized: notification.smtpIgnoreTLSError || false,
+                rejectUnauthorized: !notification.smtpIgnoreTLSError || false,
             }
         };