diff --git a/docs/configuration/how_to_serve_another_domain_for_webfinger.md b/docs/configuration/how_to_serve_another_domain_for_webfinger.md
index b6e699e59..d544f8b94 100644
--- a/docs/configuration/how_to_serve_another_domain_for_webfinger.md
+++ b/docs/configuration/how_to_serve_another_domain_for_webfinger.md
@@ -52,5 +52,8 @@ Some BEs and FEs may still use AP id instead of account subject to present user
 
 ### Warnings
 
-Change `host` in `Pleroma.Web.Endpoint` with caution, it may result in local accounts being duplicated on remote instances,
-which will affect federation.
+Change `host` in `Pleroma.Web.Endpoint` and `domain` in `Pleroma.Web.WebFinger` with caution, it will likely result in 
+local accounts being duplicated on remote instances, which will affect federation and users reachability.
+
+Webfinger results are generally cached by server implementations and may only be requested once (on first account encounter)
+or with set rate limit depending on the implementation.