diff --git a/mailu.subfolder.conf b/mailu.subfolder.conf
index 5f22bbf..1d97d71 100644
--- a/mailu.subfolder.conf
+++ b/mailu.subfolder.conf
@@ -1,4 +1,6 @@
 # This config have been tested with "TLS_FLAVOR=mail"
+# To avoid errors you must change in docker-compose ports: 80 and 443, more info: https://mailu.io/1.7/reverse.html
+# Maybe the proxy_redirect arent need it, but it is working and are not harmful
 
 location /admin{
     return 301 $scheme://$host/admin/;