diff --git a/core/nginx/conf/nginx.conf b/core/nginx/conf/nginx.conf
index 5158ca5c..718e90b9 100644
--- a/core/nginx/conf/nginx.conf
+++ b/core/nginx/conf/nginx.conf
@@ -302,7 +302,7 @@ mail {
       starttls only;
       {% endif %}
       protocol smtp;
-      smtp_auth plain login;
+      smtp_auth plain;
     }
 
     {% if TLS %}
@@ -310,7 +310,7 @@ mail {
       listen 465 ssl;
       listen [::]:465 ssl;
       protocol smtp;
-      smtp_auth plain login;
+      smtp_auth plain;
     }
 
     server {