Nonexistent zone respond on query
marcus.uddenhed at horby.se
Tue Mar 15 09:40:43 UTC 2005
Thanks for your response and yes it proved to be our firewall That
messed it up real good.
There where 2 entries pointing to same server but one of the with a
strange pointer resulting in that the internal ip was shown sporadically
on the outside making the dns servers act weird.
WebMaster / WebDeveloper
From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org] On
Behalf Of Barry Margolin
Sent: den 25 februari 2005 14:56
To: comp-protocols-dns-bind at isc.org
Subject: Re: Nonexistent zone respond on query
In article <cvn5up$pbh$1 at sf1.isc.org>,
"Uddenhed, Marcus" <marcus.uddenhed at horby.se> wrote:
> I have a strange occurrence on our dns servers.
> It's like this:
> on our servers we have a pointer to our webmail like this:
> Forward lookup:
> webmail IN A x.x.x.111
> Reverse lookup:
> 111 IN PTR webmail.domain.se.
> When we do a dig against our server from an external server it doesn't
> report the above address it reports the internal address instead but=20
> when i do the on the dns server it reports the correct one.
> But if we change the pointer above to 112 it suddenly report the right
> IP from the external server as well but when changed back to 111 it=20
> reports the internal one yet again?
Sounds like a confused NAT router.
Barry Margolin, barmar at alum.mit.edu
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