DNS Error with MX records on Mac OS X 10.4.8

[ericmiller74]

Hello all, I am trying to install Zimbra on Mac OS X 10.4.8 (not server). I have downloaded and installed DNS Enabler and have set up records for my domain. The machines DNS record is tiger.ericmiller.net and I would like my zimbra site to be zimbra.ericmiller.com. I have a mail record named mail.ericmiller.net, all of these point to a single IP address.

Here are the results of host and dig

Mad-Mac:~ ericmiller$ host zimbra.ericmiller.net
zimbra.ericmiller.net has address 10.0.0.101
Mad-Mac:~ ericmiller$ dig MX ericmiller.net

; <<>> DiG 9.3.2 <<>> MX ericmiller.net
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18425
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; QUESTION SECTION:
;ericmiller.net. IN MX

;; ANSWER SECTION:
ericmiller.net. 10800 IN MX 10 mail.ericmiller.net.

;; AUTHORITY SECTION:
ericmiller.net. 10800 IN NS tiger.ericmiller.net.

;; ADDITIONAL SECTION:
mail.ericmiller.net. 10800 IN A 10.0.0.101
tiger.ericmiller.net. 10800 IN A 10.0.0.101

;; Query time: 14 msec
;; SERVER: 10.0.0.101#53(10.0.0.101)
;; WHEN: Wed Oct 25 07:29:21 2006
;; MSG SIZE rcvd: 105


What does the Zimbra installer need to properly resolve the MX record for the domain.

Thanks for your help