QDNS 3.53 crash

Re: QDNS 3.53 crash

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At 4:49 PM -0400 5/17/04, David Cooper wrote:
> >> Another question I have is: Why do I get lame delegations from the root
>>> servers?
>>
>> The lame delegations listed above do not refer to root servers.
>
>I'm aware of that, I apologize for not including the relevant entries:
>May 17 08:48:40 Lame delegation for "i.gtld-servers.net." from
>"192.5.5.241:53"
>May 17 08:48:40 Lame delegation for "j.gtld-servers.net." from
>"192.5.5.241:53"
>
>Those two do, right?

Yes. I'm not entirely sure why this is coming up, but as I recall, it
has something to do with the delegation records returned to QuickDNS
Server in response to its previous query - in other words, it queries
one server, which points it to 192.5.5.241 (f.root-servers.net),
which then doesn't return the result expected.

>I also get absolutely blasted by the following folks all the time from
>multiple IP addresses:
>May 17 08:48:40 Lame delegation for "dns3.cnnic.net.cn." from
>"198.32.64.12:53"

There's probably a configuration error in the cnnic.net.cn domain.
(This sounds like some Chinese national registry.)

If you really want to see what's going on, turn the logging level up
to Debug and trace through the various queries QuickDNS Server sends,
along with the responses returned. This can be very difficult to pin
down.

> > You're seeing a fair number of bogus replies. This can sometimes be
> > caused by a malfunctioning (possibly overloaded) router, or by
> > overloading Open Transport on the server, and the same condition can
> > also cause Open Transport to fail. This could be causing your crash.
> > It could also cause the extra DNS reply logged by your mail server.
>
>Given the load on the server (almost all of it from externally) I can
>certainly see Open Transport getting overloaded.
>
>Our router is almost never overloaded, that's something I can easily
>monitor. What might a misconfiguration look like that would cause an issue
>like this?

Not sure. This is frankly outside our expertise. Perhaps some of the
other members of this forum can be of more assistance.

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