Split DNS, Multiple Domains

[buee]

What would be the accurate way to configure split-DNS with multiple domains configured in Zimbra?

I have 4 domains that need to have email servers, let's say they're domain1, domain2, domain3, and domain4. The main zone may look a little strange because my Zimbra server is set up with DRBD. I gave each one its own zone and loaded them in the named.conf file, but they don't appear to be resolving correctly.

The default domain zone looks like this:

; BIND db file for domain1.com

$TTL 86400

@       IN      SOA     domain1.com.      admin.domain1.com.    (
                        2011070101      ; serial number YYMMDDNN
                        28800           ; Refresh
                        7200            ; Retry
                        864000          ; Expire
                        86400           ; Min TTL
                        )


$ORIGIN domain1.com.

                IN      NS      192.168.168.11
                IN      MX      10 zimbra.domain1.com.
zimbra          IN      A       192.168.168.10
zimbra          MX      10      zimbra
zimbra-1        IN      A       192.168.168.11
zimbra-1        MX      10      zimbra-1
zimbra-2        IN      A       192.168.168.12
zimbra-2        MX      10      zimbra-2

Subsequent Domains look like this:

; BIND db file for domain2.com

$TTL 86400

@       IN      SOA     domain2.com.      admin.domain2.com.      (
                        2011072501      ; serial number YYMMDDNN
                        28800           ; Refresh
                        7200            ; Retry
                        864000          ; Expire
                        86400           ; Min TTL
                        )


$ORIGIN domain2.com.

                IN      NS      192.168.168.11
zimbra          IN      A       192.168.168.10
                MX      10      mail.domain2.com
mail            IN      A       192.168.168.10

The subsequent domains are kinda stripped down because I was trying to get the replicated data out of there to no avail. I tried CNAME records for zimbra and mail, but then named wouldn't start.

Restarting/reloading named succeeds with the above config, but nslookups and digs fail on all but the primary domain. And I get errors in /var/log/messages like:

Aug  2 10:56:02 zimbra-1 named[18671]: domain2.com-zone:17: ignoring out-of-zone data (zimbra.domain1.com)
Aug  2 10:56:02 zimbra-1 named[18671]: domain2.com-zone:19: ignoring out-of-zone data (mail.domain1.com)

I'm sure it's something stupid that I'm doing wrong.

[phoenix]

Originally Posted by buee

What would be the accurate way to configure split-DNS with multiple domains configured in Zimbra?

The same way you'd configure any domain, you need valid DNS A & MX records pointing to the LAN IP of the zimber server - your MX records for 'zimbra', 'zimbra-1' & 'zimbra-2' are not configured correctly. As always, details in the Split DNS article.