I'm trying to install Zimbra on an EC2 instance running Ubuntu 12.04LTS and my DNS is using FreeDNS (where I think the problem is). I tried using this guide: Split DNS - Zimbra :: Wiki but it didn't help. Also, I'm running Webmin for my server administration which may be part of the problem.
The error I'm getting is similar to the Split server error I've seen many people get:
ERROR: Installation can not proceeed. Please fix your /etc/hosts file
is the ip address of the host,
is the FULLY QUALIFIED host name, and
is the (optional) hostname-only portion
Any guidance would be greatly appreciated!