mailinabox/scripts/dns.sh

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# Configures a DNS server using nsd.
#
# After running this script, you also must run scripts/dns_update.sh,
# and any time a zone file is added/changed/removed. It should be
# run after DKIM is configured, however.
apt-get -qq -y install nsd3
if [ -z "$PUBLIC_HOSTNAME" ]; then
PUBLIC_HOSTNAME=example.org
fi
if [ -z "$PUBLIC_IP" ]; then
# works on EC2 only...
PUBLIC_IP=`wget -q -O- http://instance-data/latest/meta-data/public-ipv4`
fi
sudo mkdir -p /var/run/nsd3
mkdir -p "$STORAGE_ROOT/dns";
# Store our desired IP address (to put in the zone files) for later.
# Also store our primary hostname, which we'll use for all DKIM signatures
# in case the user is only delegating MX and we aren't setting DKIM on
# the main DNS.
echo $PUBLIC_IP > $STORAGE_ROOT/dns/our_ip
echo $PUBLIC_HOSTNAME > $STORAGE_ROOT/dns/primary_hostname
# Create the default zone if it doesn't exist.
if [ ! -f "$STORAGE_ROOT/dns/$PUBLIC_HOSTNAME.txt" ]; then
# can be an empty file, defaults are applied elsewhere
cat > "$STORAGE_ROOT/dns/$PUBLIC_HOSTNAME.txt" << EOF;
EOF
fi
chown -R ubuntu.ubuntu $STORAGE_ROOT/dns
ufw allow domain