Intermitant DNS errors

[Kevin Darcy]

I can't get any answer out of continuum.cm.nu. Could it be that the servers which are having
the problem are trying that server first and timing out the whole query too quickly? You
should get continuum fixed or remove/replace the NS records pointing to it.


- Kevin

Shane Wegner wrote:

> Hi all,
>
> I am experiencing a DNS problem which really doesn't make sence.  The
> problem is that some servers intermitantly timeout while looking up the
> wapvi.bc.ca domain.  Most servers are fine.  It's just a small percentage
> which do this.  Trying the same server a short time later will often work
> and it will resolve fine.
>
> The wapvi.bc.ca zone has three nameservers.  When attempting to track the
> problem, I did a query on all three for the zone using nslookup.  All were
> authorative for that zone.  The named.conf for the zone is as follows on all
> three servers.
> zone "wapvi.bc.ca" {
> type slave;
> or type master;
> file "wapvi.bc.ca";
> allow-query {
> any;
> };
> allow-transfer {
> none;
> or a list of secondaries on the primary server
> };
> };
>
> I will attach the zone file here.  If anyone can provide any information on
> how I can track this down, I would appreciate it.
>
> Shane
>
> --- cut ---
> $ORIGIN bc.ca.
> wapvi   IN      SOA viper.wapvi.bc.ca. hostmaster.wapvi.bc.ca. (
>                 2000070619 10800 1800 604800 3600 )
>                 IN      NS      wapvi.cm.nu.
>                 IN      NS      continuum.cm.nu.
>                 IN      NS      odyssey.cm.nu.
>                 IN      MX      10 viper.wapvi.bc.ca.
>                 IN      MX      20 continuum.cm.nu.
>                 IN      MX      25 odyssey.cm.nu.
>                 IN      TXT     "The Western Association of Persons With Vision Imparement"
>                 IN      A       209.53.12.101
> $ORIGIN wapvi.bc.ca.
> localhost       IN      A       127.0.0.1
> viper   IN      A       209.53.12.101
>                 IN      HINFO   "i586" "linux"
> news            IN      CNAME   news.bctel.ca.
> nntp            IN      CNAME   viper.wapvi.bc.ca.
> mail            IN      CNAME   viper.wapvi.bc.ca.
> smtp            IN      A       209.53.12.101
> pop3            IN      A       209.53.12.101
> ftp             IN      CNAME   viper.wapvi.bc.ca.
> www             IN      A       209.53.12.101
> support         IN      A       209.53.12.101
> sql             IN      CNAME   viper.wapvi.bc.ca.
> $ORIGIN localnet.wapvi.bc.ca.
> viper   IN      A       192.168.1.1
> pppserver               IN      A       192.168.2.1
> news            IN      CNAME   news.bctel.ca.
> nntp                    IN      A       192.168.2.1
> mail                    IN      A       192.168.2.1
> smtp                    IN      A       192.168.2.1
> pop3                    IN      A       192.168.2.1
> ftp                     IN      A       192.168.2.1
> www             IN      A       192.168.2.1
> support         IN      A       192.168.2.1
> sql                     IN      A       192.168.2.1
> dialin1         IN      A       192.168.2.2
> dialin2         IN      A       192.168.2.3
> dialin3         IN      A       192.168.2.4
> millennium      IN      A       192.168.1.3
> century         IN      A       192.168.1.4
> tiresias        IN      A       192.168.1.5
> ziggy           IN      A       192.168.1.6
> --- cut ---
>
> --
> Shane Wegner: shane at cm.nu
> Personal website: http://www.cm.nu/~shane/