Luis Daniel Lucio Quiroz wrote:
Le mercredi 11 novembre 2009 09:15:12, Matus UHLAR - fantomas a écrit :
On 11.11.09 16:05, Pawel Rutkowski wrote:
Please look below, it's normal ? Sometime servfail, sometimes nxdomain.
[r...@linux ~]# host 209.85.255.187 ns1.isp
Using domain server:
Name: ns1.isp
Address: ns1.isp#53
Aliases:
Host 187.255.85.209.in-addr.arpa not found: 2(SERVFAIL)
[r...@linux ~]# host 209.85.255.187 ns1.isp
Using domain server:
Name: ns1.isp
Address: ns1.isp#53
Aliases:
Host 187.255.85.209.in-addr.arpa not found: 3(NXDOMAIN)
[r...@linux ~]# host 209.85.255.187 ns1.isp
Using domain server:
Name: ns1.isp
Address: ns1.isp#53
Aliases:
Host 187.255.85.209.in-addr.arpa not found: 3(NXDOMAIN)
Use 'dig -x 209.85.255.187 @ns1.isp' and look at "NS" records and TTLs.
Invalid delegations and inconsistent NS records (domain is delegated from
parent to different servers than those listed in the domain) often cause
these kinds of problems.
I think I did have same problem
with 9.4.1p1, 9.5p2 and 9.6p1. Look
[d...@brandmauer ~]$ host www.bbc.co.uk 127.0.0.1
Using domain server:
Name: 127.0.0.1
Address: 127.0.0.1#53
Aliases:
www.bbc.co.uk is an alias for www.bbc.net.uk.
www.bbc.net.uk has address 212.58.253.68
Host www.bbc.net.uk not found: 2(SERVFAIL)
[d...@brandmauer ~]$
By default, "host" looks up A, AAAA and MX records, in that order.
I did sniff connecction and It seems that the query that fails is a MX request
of www.bbc.net.mx. Odd thing.
The delegated nameservers for bbc.net.uk are answering an MX query with
an A record:
$ dig www.bbc.net.uk mx @ns0.rbsov.bbc.co.uk +short
212.58.253.68
$ dig www.bbc.net.uk mx @ns0.thdo.bbc.co.uk +short
212.58.253.68
Really bad stuff, but this is a *persistent* condition, caused by the
domain owner(s), and probably not related to the issue reported by the
previous poster.
- Kevin
_______________________________________________
bind-users mailing list
bind-users@lists.isc.org
https://lists.isc.org/mailman/listinfo/bind-users
