latest zimbra on OSX+OpenDNS:DNS ERROR

[bZJyA7mf]

>DNS ERROR - none of the MX records for .....
>resolve to this host
>It is suggested that the MX record resolve to this host
>Re-Enter domain name? [Yes]

I am using OSX, so I have no intention to tamper into /etc.
I am using OpenDNS, via a simple setting into the system preferences.
Why this affects the installation? Why this test in the first place?

How do I complete the installation?

Thank you
Bob

[phoenix]

The test is there because you need DNS A & MX records pointing to your zimbra server so postfix can resolve addresses, you need those records set.