PTRs for subdomains?

[Nuno Teixeira]

Hello Joseph,

Yes I already have a '167.10.209.in-addr.arpa' and I use only one IP address
for all domains and subdomains. In this moment I created an PTR for all
domains, i.e.:

File '167.10.209.in-addr.arpa':
...
210    PTR    domainA.com
210    PTR    domainB.com
210    PTR    domainC.com
....

My question is if I need to include the subdomains in this list too, like:

...
210    PTR    subdomainA.com
210    PTR    subdomainB.com
210    PTR    subdomainC.com

But, in my case, I have only have one IP adress, so do I need to setup all
this PTRs or just one is needed to main domain?

Thanks very much,

Nuno Teixeira



----- Original Message -----
From: "Joseph S D Yao" <jsdy at cospo.osis.gov>
To: "Nuno Teixeira" <nuno.teixeira at pt-quorum.com>
Cc: <bind-users at isc.org>
Sent: Tuesday, September 19, 2000 11:37 PM
Subject: Re: PTRs for subdomains?


> On Tue, Sep 19, 2000 at 11:24:52PM +0100, Nuno Teixeira wrote:
> > I have the reverse record with PTRs configured to all domains at my
server.
> > I'd like to know if it is necessary to configure PTRs to subdomains too.
> >
> > My problem is that I have 39 domains at my server and about 300
subdomains.
>
> Every IP address that is under your control should have a reverse-DNS
> PTR record.  This is totally independent of domains and subdomains.
> But if the addresses in your subdomains are distinct and different
> addresses from those in your higher-level subdomains, then you need to
> get reverse DNS domains set up for them.
>
> Note that if you have multiple domains using IP addresses from, e.g.,
> 209.10.167.*, then you only need to have one reverse-DNS domain for all
> of these, namely, "167.10.209.in-addr.arpa".
>
> --
> Joe Yao jsdy at cospo.osis.gov - Joseph S. D. Yao
> COSPO/OSIS Computer Support EMT-B
> -----------------------------------------------------------------------
> This message is not an official statement of COSPO policies.
>