diff --git a/mail-server/postfix.nix b/mail-server/postfix.nix
index d14e6d3..11a304d 100644
--- a/mail-server/postfix.nix
+++ b/mail-server/postfix.nix
@@ -258,10 +258,11 @@ in
           "check_sender_access ${mappedFile "reject_senders"}"
         ];
 
-        # quota checking
         smtpd_recipient_restrictions = [
+          # reject selected recipients
           "check_recipient_access ${mappedFile "denied_recipients"}"
           "check_recipient_access ${mappedFile "reject_recipients"}"
+          # quota checking
           "check_policy_service inet:localhost:12340"
         ];