OT: nameservers went lame
Ugo Bellavance
ugob at CAMO-ROUTE.COM
Wed Jul 28 04:25:17 IST 2004
Mark Nienberg wrote:
> On 27 Jul 2004 at 16:10, Ugo Bellavance wrote:
>
>
>>Mark Nienberg wrote:
>>
>>
>>>I'm running a cacheing-only nameserver on my MailScanner server. It
>>>was quiet for months, but now I see lots of these in the logs:
>>>
>>>Jul 27 12:40:03 gingham named[3316]:
>>>lame server resolving '19.160.99.61.in-addr.arpa'
>>>(in '160.99.61.in-addr.arpa'?): 210.117.65.2#53
>>
>>Since march 7th on my very quiet server (200 msg/day).
>>[root at mta1 log]# grep lame /var/log/messages | wc -l
>> 33360
>
>
> Wow, that is an eye-opening number! I had no idea there were so many
> misconfigured DNS servers out there. It is amazing that DNS works at all. It must
> be really well designed.
I don't exacly know the impact of this error message on performance, nor
do I know how the resolver deals with it. All I've found is this:
"when you try to resolve a domain that has a bad domain host"
"This is caused by the NS record for a particular domain is not the
authoritive server for that domain."
So I guess it just tries another NS.
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