kcd at daimlerchrysler.com
Tue Jan 21 20:34:10 UTC 2003
Alex Tang wrote:
> phn at icke-reklam.ipsec.nu wrote in message news:<b0hesd$eg78$1 at isrv4.isc.org>...
> > Alex Tang <cchytang at sinaman.com> wrote:
> > > Dear All
> > > I keep getting the following logs which shows that the dns server is
> > > being queried his ip address ptr record from different IP. However,
> > > the ptr is hosting by other name server. They should not query my
> > > server. Do any one know why they (applications) query the ptr from my
> > > server instead of the authoritative server which is hosting the ptr
> > > record.
> > > eg.
> > > 20-Jan-2003 17:25:49.285 security: notice: denied query from
> > > [22.214.171.124].11853
> > > for "126.96.36.199.in-addr.arpa" PTR/IN
> > > 188.8.131.52 (dns1) is a new dns server and hosting some domains.
> > > the ptr of 184.108.40.206 is hosting by the other server ns1.
> > > Therefore, all request for querying the ptr of 220.127.116.11 should go
> > > to ns1 nor dns1(18.104.22.168)
> > The client will ask the dns-servers listed in /etc/resolv.conf ( or
> > simular) for everything.
> > The client is not ( shall not) be smart and attempt to locate=20
> > which servers are doing what domains, that's a nameserver task. Thus
> > the client asks your nameserver all queries.=20
> Thanks you help.
> Would you tell me that what is locate=20 and all queries.=20 ?
Have you never seen extraneous "=20"s in people's email before? It's an artifact
of incompatibilities between various mail-user-agents' and/or gateways' notions of
how to handle the quoted-printable content-type. You should just read those as the
plain words "locate" and "all queries".
> Why the
> client ask /etc/resov.conf ? The file should be use by the name server
No, you've got that backwards: DNS *clients* use /etc/resolv.conf (on Unix at
least; Windows OS'es presumably use some sort of registry crud);
BIND name*servers* use /etc/named.conf.
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