diff --git a/docs/sources/setup-grafana/configure-grafana/_index.md b/docs/sources/setup-grafana/configure-grafana/_index.md
index 7316f355197..6d405e6d655 100644
--- a/docs/sources/setup-grafana/configure-grafana/_index.md
+++ b/docs/sources/setup-grafana/configure-grafana/_index.md
@@ -1176,7 +1176,7 @@ Enable this to allow Grafana to send email. Default is `false`.
 
 ### host
 
-Default is `localhost:25`.
+Default is `localhost:25`. Use port 465 for implicit TLS.
 
 ### user