From 0974a5fb605384930912aefb1dd6c6805f47858a Mon Sep 17 00:00:00 2001
From: Michael Kuron <mkuron@users.noreply.github.com>
Date: Tue, 25 Dec 2018 15:02:50 +0100
Subject: [PATCH] Fix transport map authentication with multiple identical
 nexthops

---
 data/Dockerfiles/postfix/postfix.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/data/Dockerfiles/postfix/postfix.sh b/data/Dockerfiles/postfix/postfix.sh
index 425d65ff..6ec5cc1d 100755
--- a/data/Dockerfiles/postfix/postfix.sh
+++ b/data/Dockerfiles/postfix/postfix.sh
@@ -120,7 +120,8 @@ dbname = ${DBNAME}
 query = SELECT CONCAT_WS(':', username, password) AS auth_data FROM transports
   WHERE nexthop = '%s'
   AND active = '1'
-  AND username != '';
+  AND username != ''
+  LIMIT 1;
 EOF
 
 cat <<EOF > /opt/postfix/conf/sql/mysql_virtual_alias_domain_catchall_maps.cf