I'm following the wiki Ubuntu 8.04 install guide (Ubuntu 8.04 LTS Server (Hardy Heron) Install Guide - Zimbra :: Wiki) as well as the Spilt-DNS wiki (Split DNS - Zimbra :: Wiki).
I'm stuck on the zone file creation part. Specifically I am confused how the last few lines should look because both wikis above look different.
This from from the Ubuntu guide:
This is the Split-DNS:
; BIND data file for mydomain.com
@ IN SOA mail.mydomain.com. admin.mydomain.com. (
070725 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
@ IN NS mail
IN MX 10 mail
IN A xxx.xxx.xxx.xxx
mail IN A xxx.xxx.xxx.xxx
The lines I've marked in red are the ones I'm looking for help with and some explanation as to what the "@" means in the first column and also when to leave it out and replace it with "mail".
; Addresses and other host information.
@ IN SOA server.example.com. hostmaster.server.example.com. (
10118 ; Serial
43200 ; Refresh
3600 ; Retry
3600000 ; Expire
2592000 ) ; Minimum
; Define the nameservers and the mail servers
IN MX 10 server.example.com.