#!/bin/bash

#DESC check hostname. if it has a teleflora.com domain, remove the domain and replace with .tf, restart sendmail
#DESC this should resolve the issue with the answering mx record for noexistenthost.teleflora.com by cloudflare causing sendmail to try over and over
#HELP command line option 1 "revert" restores the original hostname

if [ "$1" == "revert" ];
then
sed -i 's/.tf/.teleflora.com/g' /etc/hosts
NEW_NAME="`echo $HOSTNAME | cut -d"." -f1`.teleflora.com"
hostnamectl set-hostname $NEW_NAME
systemctl restart sendmail
echo "hostname change reverted...."
exit 0
else
HOSTNAME="`hostname`"
[ "`echo $HOSTNAME | grep .teleflora.com`" == "" ] && echo "No change needed." && exit 0
sed -i 's/.teleflora.com/.tf/g' /etc/hosts
NEW_NAME="`echo $HOSTNAME | cut -d"." -f1`.tf"
hostnamectl set-hostname $NEW_NAME
systemctl restart sendmail
echo "Done....."
exit 0
fi