From 280eecf00a17da7b74922fe8b5d085742c8b4ae5 Mon Sep 17 00:00:00 2001
From: User1000001 <user1000001@juiga.com>
Date: Sat, 17 Apr 2021 21:13:00 +0200
Subject: [PATCH] Added option to customize TTL in mailinabox.conf.

---
 management/dns_update.py | 8 ++++----
 setup/start.sh           | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/management/dns_update.py b/management/dns_update.py
index c595bc3b..b9995a9f 100755
--- a/management/dns_update.py
+++ b/management/dns_update.py
@@ -475,19 +475,19 @@ def write_nsd_zone(domain, zonefile, records, env, force):
 
 	zone = """
 $ORIGIN {domain}.
-$TTL 86400          ; default time to live
+$TTL {ttl}          ; default time to live
 
 @ IN SOA ns1.{primary_domain}. hostmaster.{primary_domain}. (
            __SERIAL__     ; serial number
            7200     ; Refresh (secondary nameserver update interval)
-           86400    ; Retry (when refresh fails, how often to try again)
+           {ttl}    ; Retry (when refresh fails, how often to try again)
            1209600  ; Expire (when refresh fails, how long secondary nameserver will keep records around anyway)
-           86400    ; Negative TTL (how long negative responses are cached)
+           {ttl}    ; Negative TTL (how long negative responses are cached)
            )
 """
 
 	# Replace replacement strings.
-	zone = zone.format(domain=domain, primary_domain=env["PRIMARY_HOSTNAME"])
+	zone = zone.format(domain=domain, primary_domain=env["PRIMARY_HOSTNAME"], ttl=env["TTL"])
 
 	# Add records.
 	for subdomain, querytype, value, explanation in records:
diff --git a/setup/start.sh b/setup/start.sh
index cedc426d..272b929e 100755
--- a/setup/start.sh
+++ b/setup/start.sh
@@ -95,6 +95,7 @@ PUBLIC_IPV6=$PUBLIC_IPV6
 PRIVATE_IP=$PRIVATE_IP
 PRIVATE_IPV6=$PRIVATE_IPV6
 MTA_STS_MODE=${MTA_STS_MODE-}
+TTL=${DEFAULT_TTL:-86400}
 EOF
 
 # Start service configuration.