diff --git a/install/tpl/debian_postfix.conf.master b/install/tpl/debian_postfix.conf.master
index 027e27ef6db944ac08c1d0683469b15ff9e9048e..b7dbea6300a8cc251c64e2b2a2b4e25748f737b1 100644
--- a/install/tpl/debian_postfix.conf.master
+++ b/install/tpl/debian_postfix.conf.master
@@ -9,6 +9,7 @@ virtual_uid_maps = mysql:/etc/postfix/mysql-virtual_uids.cf
 virtual_gid_maps = mysql:/etc/postfix/mysql-virtual_gids.cf
 sender_bcc_maps = proxy:mysql:{config_dir}/mysql-virtual_outgoing_bcc.cf
 inet_protocols=all
+inet_interfaces = all
 smtpd_sasl_auth_enable = yes
 broken_sasl_auth_clients = yes
 smtpd_sasl_authenticated_header = yes