From 7375134474f1d396ca2199d600055cf33548e780 Mon Sep 17 00:00:00 2001
From: Marcus Ripkens <marcus@ripkens.eu>
Date: Mon, 4 Dec 2017 22:04:22 +0100
Subject: [PATCH] Update main.cf

---
 core/postfix/conf/main.cf | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/core/postfix/conf/main.cf b/core/postfix/conf/main.cf
index d8c656c9..ea210129 100644
--- a/core/postfix/conf/main.cf
+++ b/core/postfix/conf/main.cf
@@ -91,6 +91,8 @@ smtpd_recipient_restrictions =
   reject_unverified_recipient,
   permit
 
+unverified_recipient_reject_reason = Address lookup failure
+
 ###############
 # Milter
 ###############