Multiple Domains with the same IP

Kevin Darcy kcd at daimlerchrysler.com
Fri Jan 31 21:32:56 UTC 2003


Have only one PTR record. If it bothers you that your A records and PTR 
records don't match, then have only 1 A record as well, and make the 
others aliases to it (just remember that MX records, NS records, etc. 
cannot legally point to CNAMEs).

                                                                        
                                    - Kevin

Bill Heese wrote:

>So what woulld be a better way of dealing with this?
>
>In article <b1eo6t$7s6e$1 at isrv4.isc.org>, Kevin Darcy
><kcd at daimlerchrysler.com> wrote:
>
>  
>
>>The client gets a list of PTR records in response to its reverse-DNS 
>>query. It only looks at the first one in the list.
>>
>>                                                                        
>>    - Kevin
>>
>>Bill Heese wrote:
>>
>>    
>>
>>>I'm not sure what you mean by "clients looking at the first PTR they see"?
>>>
>>>-----Original Message-----
>>>From: Kevin Darcy
>>>To: 'bind-users at isc.org'
>>>Sent: 1/31/2003 2:38 PM
>>>Subject: Re: Multiple Domains with the same IP
>>>
>>>
>>>Bill Heese wrote:
>>>
>>> 
>>>
>>>      
>>>
>>>>I have multiple domains such as cuisinart.com and cuisinart.biz
>>>>Both domains point to the same ip address
>>>>I've set up my .in-addr.arpa. to look like the below record.
>>>>
>>>>Is this correct? Any help would be greatly appreciated. Thanks in
>>>>   
>>>>
>>>>        
>>>>
>>>advance..
>>> 
>>>
>>>      
>>>
>>>>Bill
>>>>
>>>>; begin 24.94.130.in-addr.arpa.
>>>>; begin ptr cuisinart.ws.
>>>>;
>>>>$TTL 3h
>>>>@ IN SOA ns1.conair.com. dnsadmin.conair.com. (
>>>> 2003013101  ; Serial (Format, YYYYMMDDVV)
>>>> 10800s      ; Refresh after 3 hours
>>>> 3600s    ; Retry after 1 hour
>>>> 604800s  ; Expire after 1 week
>>>> 86400s      ; Minimum TTL of 1 day
>>>> )
>>>>;
>>>>; nameserver
>>>>;
>>>>IN NS ns1.conair.com.
>>>>IN NS ns2.conair.com.
>>>>;
>>>>; hosts
>>>>;
>>>>49 IN PTR ftp.cuisinart.ws.
>>>>49 IN PTR mail.cuisinart.ws.
>>>>49 IN PTR www.cuisinart.ws.
>>>>49 IN PTR ftp.cuisinart.com.
>>>>49 IN PTR mail.cuisinart.com.
>>>>49 IN PTR www.cuisinart.com.
>>>>
>>>>   
>>>>
>>>>        
>>>>
>>>There's nothing "wrong" with it, but it's kind of pointless. Clients 
>>>only look at the first PTR they see in the list, so just pick one and 
>>>forget about the others.
>>>
>>>                                                                       
>>>                                       - Kevin
>>>
>>> 
>>>
>>>      
>>>
>>>>   
>>>>
>>>>        
>>>>
>>>
>>>
>>>
>>> 
>>>
>>>      
>>>
>>
>>
>>    
>>
>
>
>
>  
>





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