I've seen quite a few posts about the MX error. In each case I've seen it seemed like folks didn't have the proper A/MX records in their internal DNS configured.
I'm far from an expert in DNS or Linux, but I think I have things setup properly.
nslookup with 'set q=mx' and fed 'foostuff.com' returns the following.
However, I still get the following error when running the install.sh script.
foostuff.com mail exchanger = 10 zimbra.foostuff.com.
If I continue the installation the services start properly. I'm not sure if it's a false-positive. I've not tried to configure things much yet thinking that I should resolve the installation error before getting too deep into configuration.
DNS ERROR resolving MX for zimbra.foostuff.com
It is suggested that the domain name have an MX record configured in DNS
Change domain name? [Yes]
root@zimbra:~# cat /etc/hosts
192.168.0.10 zimbra.foostuff.com zimbra
Oh yea, Latest version of OpenSource Zimbra on Ubuntu 6.06.1-server.