need help in bind9 setup

[Chiang Seng Chang]

Would these be more correct ?

db.dom-a.com:

      $TTL    86400
      dom-a.com.  IN  SOA     ns hostmaster
                              (...omitted...)
                  IN  NS      ns
                  IN  MX 10   mail
      @           IN  A       1.2.3.4
      localhost   IN  A       127.0.0.1
      ns          IN  A       1.2.3.4
      mail        IN  A       1.2.3.4
      www         IN  CNAME   @
      foo         IN  CNAME   @


db.dom-b.com:

      $TTL    86400
      dom-b.com.  IN  SOA     ns.dom-a.com hostmaster.dom-a.com
                              (...omitted...)
                  IN  NS      ns.dom-a.com.
                  IN  MX 10   mail.dom-a.com.
      @           IN  A       1.2.3.4
      localhost   IN  A       127.0.0.1
      www         IN  CNAME   @


note. ip 1.2.3.4 is repeat many times (?)

-cs


Barry Margolin wrote:
> In article <d36qlh$2hn9$1 at sf1.isc.org>,
>  Chiang Seng Chang <cs at ctzen.com> wrote:
> 
> 
>>Hi,
>>
>>I have a colo machine with 1 ip address and several domain names, I need 
>>to confirm that I am setting up bind9 correctly. (note. not using actual 
>>machine name and ip).
>>
>>name of server: foo.dom-a.com
>>
>>domains: dom-a.com, dom-b.com
>>
>>named.conf (the interesting part):
>>
>>     zone "." {
>>         type hint;
>>         file "named.root";
>>     };
>>
>>     zone "dom-a.com" in {
>>         type master;
>>         file "master/db.dom-a.com";
>>         allow-query { any; };
>>     };
>>
>>     zone "dom-b.com" in {
>>         type master;
>>         file "master/db.dom-b.com";
>>         allow-query { any; };
>>     };
>>
>>
>>db.dom-a.com:
>>
>>     $TTL    86400
>>     dom-a.com.  IN  SOA     ns hostmaster (...omitted...)
>>                 IN  NS      ns
> 
> 
> NS records must point to A records, not CNAME records.
> 
> You should also have at least 2 nameservers for a zone.
> 
> 
>>                 IN  MX 10   mail
> 
> 
> MX records must point to A records, not CNAME records.
> 
> 
>>     @           IN  A       1.2.3.4
>>     localhost   IN  A       127.0.0.1
>>     ns          IN  CNAME   @
>>     mail        IN  CNAME   @
>>     www         IN  CNAME   @
>>     foo         IN  CNAME   @
>>
>>
>>db.dom-b.com:
>>
>>     $TTL    86400
>>     dom-b.com.  IN  SOA     ns hostmaster (...omitted...)
>>                 IN  NS      ns
>>                 IN  MX 10   mail
> 
> 
> Same as above -- these both must point to A records, and you should have 
> two NSes.
> 
> 
>>     @           IN  A       1.2.3.4    ; SAME IP AS dom-a.com
>>     localhost   IN  A       127.0.0.1
>>     ns          IN  CNAME   @
>>     mail        IN  CNAME   @
>>     www         IN  CNAME   @
>>
>>
>>notes:
>>
>>1. dom-a has an extra host foo
>>2. there is only 1 ip address
>>
>>
>>Question #2: how do I set up the reverse lookup zone file ?
>>
>>Obviously the colo is not going to give me a subnet, in fact there is 
>>only 1 ip.  In this case, do I just setup a
>>
>>     zone "3.2.1.in-addr.arpa"
>>
>>and a
>>
>>     4  IN PTR  foo.dom-a.com.
>>
>>?
> 
> 
> No, you should set up
> 
> zone "4.3.2.1.in-addr.arpa"
> 
> and it should contain
> 
> @ IN PTR foo.dom-a.com.
> 
> The colo center will have to delegate this reverse zone to your server.
>