From 16b2a2c055de05d7cb608617582b0ab64830850b Mon Sep 17 00:00:00 2001
From: Igor Scheller <igor.scheller@igorshp.de>
Date: Thu, 21 May 2020 19:28:35 +0200
Subject: [PATCH] [Postfix] Set smtp_address_preference to any (#3561)

Closes https://github.com/mailcow/mailcow-dockerized/issues/3560
---
 data/conf/postfix/main.cf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/data/conf/postfix/main.cf b/data/conf/postfix/main.cf
index ecc8211a..58518c34 100644
--- a/data/conf/postfix/main.cf
+++ b/data/conf/postfix/main.cf
@@ -172,7 +172,7 @@ non_smtpd_milters = inet:rspamd:9900
 milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen}
 mydestination = localhost.localdomain, localhost
 # Prefere IPv4, useful for v4-only envs
-smtp_address_preference = ipv4
+smtp_address_preference = any
 smtp_sender_dependent_authentication = yes
 smtp_sasl_auth_enable = yes
 smtp_sasl_password_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_sasl_passwd_maps_sender_dependent.cf