Internet DNS forwarders causing Intranet DNS servers to be unresponsive?

[J Sloan]

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