Internet DNS forwarders causing Intranet DNS servers to be unresponsive?

[paulette mudrey]

Joe,

We do have 2 internal NT DNS servers that are not authoritative for any 
zones but have hpadm1 as a forwarder.  Could this be what is causing the 
forwarding loop?  Unfortunately we have to keep these DNS servers up, since 
a lot of our DNS clients have them as their DNS servers - until we get them 
all converted.  Is there a better way to set this up on NT DNS servers?

Paulette

>From: J Sloan <joe at tmsusa.com>
>To: paulette mudrey <paulette_mudrey at hotmail.com>
>CC: comp-protocols-dns-bind at isc.org
>Subject: Re: Internet DNS forwarders causing Intranet DNS servers to be 
>unresponsive?
>Date: Tue, 26 Apr 2005 10:11:44 -0700
>
>paulette mudrey wrote:
> >We have 2 intranet DNS servers that point to our 2 internet DNS servers 
>as
> >forwarders and we have noticed that if we have problems with our Internet
> >connection that the intranet DNS servers are unresponsive.  In one case 
>we
> >got the following errors and had to restart named:
> >
> >Apr 21 14:12:14 hpadm1 /usr/local/sbin/named[1033]: client 
>172.17.100.9#53:
> >no more recursive clients: out of memory
> >Apr 21 14:12:14 hpadm1 /usr/local/sbin/named[1033]: client
> >172.17.133.5#10001: no more recursive clients: out of memory
> >Apr 21 14:12:14 hpadm1 /usr/local/sbin/named[1033]: client
> >10.0.227.214#1829: no more recursive clients: out of memory
> >Apr 21 14:12:14 hpadm1 /usr/local/sbin/named[1033]: client 
>10.0.165.55#1737:
> >no more recursive clients: out of memory
> >Apr 21 14:12:14 hpadm1 /usr/local/sbin/named[1033]: client
> >172.16.1.31#36332: no more recursive clients: out of memory
> >Apr 21 14:12:14 hpadm1 /usr/local/sbin/named[1033]: client 
>172.31.101.16#53:
> >no more recursive clients: out of memory
> >Apr 21 14:12:14 hpadm1 /usr/local/sbin/named[1033]: client
> >172.17.133.5#10001: no more recursive clients: out of memory
> >Apr 21 14:12:15 hpadm1 /usr/local/sbin/named[1033]: client 
>10.1.87.157#3486:
> >no more recursive clients: out of memory
> >Apr 21 14:12:14 hpadm1 /usr/local/sbin/named[1033]: client 
>172.17.100.9#53:
> >no more recursive clients: out of memory
> >Apr 21 14:12:15 hpadm1 /usr/local/sbin/named[1033]: client 
>10.1.86.149#1031:
> >no more recursive clients: out of memory
> >Apr 21 14:12:15 hpadm1 /usr/local/sbin/named[1033]: client 
>10.0.168.30#2617:
> >no more recursive clients: out of memory
> >Apr 21 14:12:15 hpadm1 /usr/local/sbin/named[1033]: client 
>10.0.75.37#1030:
> >no more recursive clients: out of memory
> >Apr 21 14:12:15 hpadm1 /usr/local/sbin/named[1033]: client 
>172.31.101.16#53:
> >no more recursive clients: out of memory
> >Apr 21 14:12:15 hpadm1 /usr/local/sbin/named[1033]: client 
>10.1.87.96#4206:
> >no more recursive clients: out of memory
> >
>
>IMHO this looks like you have a forwarding loop -
>
>Joe
>
>

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