unapproved update

[johnny cal]

On my name server I get a ton of logs that read

Jun  1 12:09:44 ns named[15567]: unapproved update from 
[208.160.120.131].2319 for mydomain.com
Jun  1 12:09:45 ns named[15567]: unapproved update from 
[208.160.120.131].2324 for 120.160.208.in-addr.arpa
Jun  1 12:09:54 ns named[15567]: unapproved update from 
[24.142.186.191].2161 for mydomain.com
Jun  1 12:09:56 ns named[15567]: unapproved update from 
[24.142.186.191].2166 for 75.142.24.in-addr.arpa
Jun  1 12:10:10 ns named[15567]: unapproved update from 
[206.157.163.23].3711 for 163.157.206.in-addr.arpa
Jun  1 12:10:21 ns named[15567]: unapproved update from 
[208.160.122.115].2356 for mydomain.com
Jun  1 12:10:26 ns named[15567]: unapproved update from 
[208.138.198.228].27594 for mydomain.com
Jun  1 12:10:27 ns named[15567]: unapproved update from 
[208.138.198.228].27598 for mydomain.com 
					     unapproved update from [authoritive] for authoritive
I am wondering why these logs are showing up.  I am an ISP and we are 
incharge (have authority for these classes).   I have read that window 
2000 makes these kind of requests, and that you can block at the router 
for certain queries. Does any of these hold truth.  How can I fix the 
logging so that I don't see just these or stop an "unapproved update".

thank you for your help.  I am running bind 8..2.2p5 and solaris 7

john



-----------------------------------
This message was sent with the demo version of Postmaster, a BeOS mail client.
For more information, please visit http://kennyc.com/postmaster