resolve-problems after transfering the domain to other ns servers

[Kevin Darcy]

Roland Dworschak wrote:

> The domain 'stadlbauer.at' was registered at 'ns1.salzburg-online.at'. Like
> three weeks ago we updated the domain at ripe to our nameservers
> ns1.i-sp.com (194.163.14.1) and ns2.i-sp.com (194.163.14.2). Usually we
> register new domains to ns1.i-sp.isa.at (194.163.14.1) and ns2.i-sp.isa.at
> (194.163.14.2), but both hostnames resolv to the correct ip, therefor we
> don't think that this's our problem.

Offhand, I don't see anything wrong here. All of the delegations seem to be in
place and correct, all of the relevant TLD servers seem to be in synch.

The only thing that occurs to me is that some nameservers may be timing out
trying to resolve the name, because the "com" TLD servers may not always
provide address records for a nameserver in the "at" TLD , e.g. the
nameservers for i-sp.com, since those wouldn't be considered glue records.
This is exacerbated by the fact that the TTL for all of the isa.at records
appears to be set to 5 minutes.

If this is the case, the best solution I can think of is to change the
delegations of i-sp.com to ns1.i-sp.com and ns2.i-sp.com. That will force the
"com" servers to provide the glue records, and maybe speed up the query
resolution enough to prevent timeouts...


- Kevin


>
>
> The owner of 'stadlbauer.at' is sometimes not able to send mails to hosts
> all around the world and is not able to send to specific servers at all
> (list's included). The remote server responds that the domain
> 'stadlbauer.at' couldn't be resolved and therefor the mail wasn't acceptet.
> We checked our nameservers and tried various nslookups on diffrent servers,
> but everything seams to be okay.
>
> Did anyone have similar problems when changing the NS records of a domain?
>
> We're using bind9.1.0.
>
> 194.163.14.1  (ns1.i-sp.com)  1st DNS
> 194.163.14.2  (ns2.i-sp.com)  2nd DNS
> 194.163.14.11 (www.i-sp.com)  webserver
> 194.163.10.68 (mail.i-sp.com) mailserver of our customer
>
> ; DNS record for the stadlbauer.at domain
> $TTL 86400      ; max TTL
> $ORIGIN stadlbauer.at.
> @       IN      SOA     ns1.i-sp.com. hostmaster.i-sp.com. (
>                                 2001031501      ;       Serial
>                                 28800   ;       Refresh
>                                 7200    ;       Retry
>                                 604800  ;       Expire
>                                 3600 )  ;       TTL Minimum
> @               IN      A       194.163.14.11
> @               IN      NS      ns1.i-sp.com.
> @               IN      NS      ns2.i-sp.com.
> @               IN      MX      10      mail.stadlbauer.at.
> www             IN      A       194.163.14.11
> ftp             IN      A       194.163.14.11
> mail.stadlbauer.at.     IN      A       194.163.10.68
> smtp            IN      A       194.163.10.68
>
> ------------------ RIPE
>
> domain:   stadlbauer.at
> descr:    [organization]:Stadlbauer Holding GesmbH
> descr:    [street address]:Magazinstr 4
> descr:    [postal code]:A-5020
> descr:    [city]:Salzburg
> descr:    [country]:Austria
> descr:    [phone]:+43 662 889210
> descr:    [fax-no]:+43 662 8921520
> descr:    [e-mail]:office at stadlbauer.at
> admin-c:  AK550333-NICAT
> tech-c:   PO554546-NICAT
> zone-c:   PO554546-NICAT
> nserver:  ns1.i-sp.com
> remarks:  194.163.14.1
> nserver:  ns2.i-sp.com
> remarks:  194.163.14.2
> mnt-by:   AT-DOM-MNT
> notify:   webmaster at i-sp.com
> changed:  20010226 18:10:00
> source:   AT-DOM
>
> person:   Aigner Kurt
> address:  Stadlbauer Holding Ges.m.b.H.
> address:  Magazinstr.4
> address:  A-5027 Salzburg
> address:  AUSTRIA
> phone:    +43 662 889210
> fax-no:   +43 662 8921520
> e-mail:   office at salzburg.co.at
> nic-hdl:  AK550333-NICAT
> nic-hdl-ripe: AK1604-RIPE
> changed:  20010226 18:09:50
> source:   AT-DOM
>
> person:   Patrick Ortner
> address:  i-sp internet & system products Ortner KEG
> address:  Ignaz Rieder Kai 13
> address:  A-5020 Salzburg
> address:  Austria
> phone:    +43 662 633434
> fax-no:   +43 662633434 14
> e-mail:   office at i-sp.com
> nic-hdl:  PO554546-NICAT
> nic-hdl-ripe: PO306-RIPE
> mnt-by:   AS2871-MNT
> changed:  20001204 16:54:24
> source:   AT-DOM
>
> -------------------------------
>
> The list of domains our customer has problems sending mails to:
>
> toscana-verde.com
> kpmg.com
> gci-management.com
> vacanze-natura.it
> netvigator.com
> airportdisco.at
> casio.co.jp
> unit.com.pl
> eunet.yu
> hit.com.pl
> empik.com
>
> --------------------------------
>
> I appreciate any help we get for solving our problem.
>
> Best regards,
>
>       Roland Dworschak
>   linux administration
> ----------------------
> i-sp internet & system
> products    Ortner KEG
> ----------------------
> ignaz rieder kai    13
> a - 5020      salzburg
> Tel:    +43 662 633434
> Fax: +43 662 633434 14
> Mob: +43 676 846263 18
> ----------------------
>    http://www.i-sp.com
>  mailto:linux at i-sp.com