[SunHELP] DNS issue

[Lara Matthews]

Hi Guys

I wonder if anyone can help.

I have a problem with my DNS server it is constantly coming back with 
the error

Nov 17 06:01:16 nsaccess /usr/local/sbin/named[5254]: [ID 866145 
daemon.error] client 194.130.253.16#4578: update denied
Nov 17 06:06:25 nsaccess /usr/local/sbin/named[5254]: [ID 866145 
daemon.error] client 194.130.253.16#4591: update denied
Nov 17 06:06:28 nsaccess /usr/local/sbin/named[5254]: [ID 866145 
daemon.error] client 194.130.253.16#4601: update denied

Also daemon seems to fall over on a regular basis.  I have no idea if 
these two activities are related.  I just tried to update our primary 
config file with a new serial number incase we are out of date and I got

Nov 21 11:35:30 nsaccess /usr/local/sbin/named[7901]: [ID 866145 
daemon.notice] starting BIND 9.1.3rc1 -u named
Nov 21 11:35:32 nsaccess /usr/local/sbin/named[7901]: [ID 866145 
daemon.error] client 194.130.253.16#4758: update denied
Nov 21 11:40:21 nsaccess /usr/local/sbin/named[7901]: [ID 866145 
daemon.error] client 194.130.253.16#4781: update denied
Nov 21 11:40:28 nsaccess /usr/local/sbin/named[7901]: [ID 866145 
daemon.error] client 194.130.253.16#4793: update denied

but the daemon is still running.  Any suggestions why this might be 
happening?

Many thanks

Lara