We can help
sometimes the obvious things become less obvious when the pressure is on. So if you have made some DNS changes lets go through the basics again
Code:
cat /etc/resolv.conf
cat /etc/hosts
dig creativelights.com mx
dig creativelights.com ns
host `hostname` <- note backticks and not double quotes
what is /var/log/zimbra.log showing with respect to emails that are being deferred ?