Fix destination hash

data/Dockerfiles/postfix/syslog-ng.conf

@@ -20,7 +20,7 @@ destination d_redis_persistent_log {
     host("redis-mailcow")
     persist-name("redis1")
     port(6379)
-    command("LPUSH" "POSTFIX_LOG" "$(format-json time=\"$S_UNIXTIME\" priority=\"$PRIORITY\" program=\"$PROGRAM\" message=\"$MESSAGE\")\n")
+    command("LPUSH" "POSTFIX_MAILLOG" "$(format-json time=\"$S_UNIXTIME\" priority=\"$PRIORITY\" program=\"$PROGRAM\" message=\"$MESSAGE\")\n")
   );
 };
 destination d_redis_f2b_channel {