PTR not working...

Alexandre Racine aracine at bgrinformatique.com
Thu Aug 6 21:00:59 UTC 2009


@Kevin, Wow, that's a pretty impressive good and complete answer.

I'll really check this out on Monday and give some feedback.


@Jeff, Sorry, the complete answer was "Asking ns10.bgrinformatique.com. for 82.80-28.115.25.70.in-addr.arpa. PTR record:  Reports that no PTR records exist [from 70.25.115.83]." and .83 is one of my DNS server. So just like Kevin wrote below, I don't have the entire 70.25.115 zone.


@Justin, you mean like a 3rd DNS server? I was thinking about that since one recent RFC recommend that 3 DNS servers within 3 networks should be present (primary, secondary, and third).

@all, thanks for those quick answers, I'll check this on Monday and give some feedback!






Alexandre Racine, VMware VSP, Vmware VTSP
aracine at bgrinformatique.com
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-----Message d'origine-----
De : bind-users-bounces at lists.isc.org [mailto:bind-users-bounces at lists.isc.org] De la part de Kevin Darcy
Envoyé : 6 août 2009 16:06
À : bind-users at lists.isc.org
Objet : Re: PTR not working...

What you have would only work if you had the whole 70.25.115.0/24 and 
Bell Canada delegated all of 115.25.70.in-addr.arpa to you.

But, it looks like you only have a /28 and Bell Canada is following some 
sort of RFC 2317 convention:

;; ANSWER SECTION:
82.115.25.70.in-addr.arpa. 86400 IN CNAME 82.80-28.115.25.70.in-addr.arpa.

Presumably 80-28.115.25.70.in-addr.arpa is delegated to you, as per 
their convention. You need to populate *that* zone with PTRs if you want 
them to resolve on the Internet.

For good measure, you should probably also set yourself up to slave 
25.70.in-addr.arpa from Bell Canada so that you can still resolve your 
own PTRs even if your link is down.

- Kevin

Alexandre Racine wrote:
>
> Hi all, I am trying to make my PTR work and it does not. Testing it 
> with dnsstuff and other tools simply say that there are no records
>
> “*No PTR records exist for 70.25.115.82.* [Neg TTL=38400 seconds]”
>
> Looking up my config, I have this below. Is there something wrong?
>
> My other zones are working correctly.
>
> This is with bind 9.4.2 on Ubuntu 8.04 LTS
>
> Thanks for any help
>
> ------------
>
> $ttl 38400
>
> 115.25.70.in-addr.arpa. IN SOA ns10.bgrinformatique.com. 
> aracine.bgrinformatique.com. (
>
> 1247063804
>
> 10800
>
> 3600
>
> 604800
>
> 38400 )
>
> 115.25.70.in-addr.arpa. IN NS ns10.bgrinformatique.com.
>
> 82.115.25.70.in-addr.arpa. IN PTR mail.bgrinformatique.com.
>
> 85.115.25.70.in-addr.arpa. IN PTR bgrinformatique.com.
>
> 85.115.25.70.in-addr.arpa. IN PTR www.bgrinformatique.com.
>
> 115.25.70.in-addr.arpa. IN NS ns11.bgrinformatique.com.
>
> 83.115.25.70.in-addr.arpa. IN PTR ns10.bgrinformatique.com.
>
> 84.115.25.70.in-addr.arpa. IN PTR ns11.bgrinformatique.com.
>
> ------------
>
> This is with bind9
>
> *Alexandre Racine**, VMware VSP, Vmware VTSP*
>
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>
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