From 4554e9e66d688c417a06f1a808403f985e4a2a22 Mon Sep 17 00:00:00 2001
From: Jon Lockwood <jonathon.lockwood@networkedweb.com>
Date: Fri, 18 Feb 2022 14:16:28 +0930
Subject: [PATCH] feat(postfix): specify my_networks as localhost ONLY

mynetworks set to only be localhost as accepted/trusted.

MR !7
---
 dockerfile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dockerfile b/dockerfile
index 2f93306..6ee6844 100644
--- a/dockerfile
+++ b/dockerfile
@@ -152,6 +152,8 @@ RUN postconf -e "maillog_file=/var/log/postfix.log" \
   && postconf -e "virtual_mailbox_domains=ldap:/etc/postfix/ldap/virtual_email_domains" \
   # postfix user mapping 
   && postconf -e "virtual_alias_maps=ldap:/etc/postfix/ldap/virtual_alias_maps" \
+    # Only trust localhost
+  && postconf -e "mynetworks_style = host" \
   # by default encryption is optional
   && postconf -e "smtpd_tls_security_level=may" \
   # log outbound tls connection information