Your post did make it, you didn't see it because it's moderated.
You check your DNS with the domain name not the FQDN of your server. The correct check would be:
Code:
dig hotonhomes.com mx
dig hotonhomes.com any
Oh and if you already have a mailserver on your LAN (other than Zimbra) then you need a split domain set-up - check the
wiki for details.