CNAME setup issue

[Chris Buxton]

You've made a classic mistake, violating the CNAME and other data rule.

A CNAME record may not have the same name as any other record,  
including another CNAME record. (If you're using DNSSEC, you should  
already know enough to ignore the absolutism presented here.)  
Therefore, the following is always an error that will cause your  
entire zone to fail to load:

@	SOA	[... fill in values here ...]
	CNAME	anything.at.all.

On the other hand, this will not generate an error:

@	SOA	[... fill in values here ...]
www	CNAME	anything.at.all.

The upshot is, you need to delete that first CNAME record.

Chris Buxton
Men & Mice

On Jun 25, 2007, at 2:54 PM, Tim Traver wrote:

> Hi all,
>
> ok, this may be a simple question, but I've racked my brain over it  
> for
> too long and can't figure it out...
>
> I have a DNS server set up to be an authoritative server only. It has
> the following main configuration parameters :
>
> options {
>         directory "/etc/namedb";
>         recursion no;
>         interface-interval 30;
>         allow-transfer { any; };
>         dump-file "/var/dump/named_dump.db";
>         statistics-file "/var/log/named.stats";
>         query-source address * port 33701;
>         notify no;
> };
>
> I have a zone file set up for a domain that looks like this (will use
> the example of domain2.com):
>
> $TTL 4h
> @               IN SOA ns3.domain1.com. postmaster.domain1.com. (
>                 2007062508                      ; Serial
>                 3600 3600 1209600 3600);       ;
> Refresh,Retry,Expire,Min TTL
>
>                 IN NS   ns3.domain1.com.
>                 IN NS   ns4.domain1.com.
> ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> domain2.com.  IN      CNAME   ghs.google.com.
> www     IN      CNAME   ghs.google.com.
>
>
> Problem is, that if I query the server directly, I get the following
> answer :
>
> root at ns1# dig @ns3.simplenet.com mediabait.com
>
> ; <<>> DiG 9.3.1 <<>> @ns3.domain1.com domain2.com
> ; (1 server found)
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 55721
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;domain2.com.                 IN      A
>
> ;; Query time: 2 msec
> ;; SERVER: 209.xxx.xx.x#53(209.xxx.xx.x)
> ;; WHEN: Mon Jun 25 14:47:33 2007
> ;; MSG SIZE  rcvd: 31
>
> But, when I do a query on another domain that I know has a CNAME as
> well, I get the following :
>
> ;store.domain3.com.      IN      A
>
> ;; ANSWER SECTION:
> store.domain3.com. 14400 IN      CNAME   www.empirevstore.com.
>
> Does anyone see a problem with this setup ???
>
> Thanks,
>
> Tim.
>
>
>
>
>
>