Use same zonefile for two different domains?

[ocoro02]

I've inherited a pretty broken dns setup ... In order to make my life easier before I make big changes and fix it for good I'd like to do the following:

I have two domains. I want to be able to use the same zonefile for both domains. To make matters more interesting, the zonefile I wish to use is transferred to my bind 9.2.x installation from a Microsoft DNS server! This has the zone name in the header -

$ORIGIN .
$TTL 3600 ; 1 hour
mydomain IN SOA myserver.mydomain. hostmaster.local.mydomain. (
...

Is there any way I can refer to this zonefile from another domain entry in named.conf? I thought of zone delegation but not quite sure if this is possible here.

 

[elgrandeperro]

I did this all the time when hosting a gazillion domains.

You can't use the $ORIGIN directive (because that sets the default domain). I don't think it is required (at least in Bind 8).

So now to refer to the domain you would use @:

; $ORIGIN . < don't need

$TTL 3600 ; 1 hour
@ IN SOA myserver.mydomain. hostmaster.local.mydomain. (
...

What to watch out for is CNAMES, because CNAMES cannot point to CNAMES.

eugene

 

[ocoro02]

Ah - I thought this could be done. The snag is I'm tied to the format of the zonefile passed to me by the Microsoft DNS server which has the domain & $ORIGIN hard coded in. I think this is a case of me looking at a problem the wrong way so I think I'll see what else can be done. Thanks!