diff --git a/postfix.nix b/postfix.nix
index 913bf81..0903a05 100644
--- a/postfix.nix
+++ b/postfix.nix
@@ -244,8 +244,7 @@ in {
 
         relay-restrictions = [
           "reject_unauth_destination"
-          "reject_unauth_pipelining"
-          "reject_unauth_destination"
+          # "reject_unauth_pipelining"
           "reject_unknown_sender_domain"
           "permit_mynetworks"
           "permit_sasl_authenticated"
@@ -256,7 +255,7 @@ in {
           "check_sender_access ${mappedFile "reject_recipients"}"
           "reject_unknown_sender_domain"
           "reject_unknown_recipient_domain"
-          "reject_unauth_pipelining"
+          # "reject_unauth_pipelining"
           "reject_unauth_destination"
           "reject_invalid_hostname"
           "reject_non_fqdn_hostname"