This error would indicate you don't have any DNS A or MX records point to your server:
Code:
DNS ERROR resolving MX for mail.website.com
It is suggested that the domain name have an MX record configured in DNS
checking isEnabled zimbra-mta
zimbra-mta is enabled
MX: mail.website.com 69.217.101.238
Interface: 192.168.0.52
Interface: 127.0.0.1
DNS ERROR - none of the MX records for website.com
resolve to this host
It is suggested that the MX record resolve to this host
You need to set-up a local DNS server to install Zimbra correctly.