I'm seeing the following types of errors in my named.run

Jun 25 15:44:48.000 security: client: error: client 192.168.10.5#3990:
update '10.168.192.IN-ADDR.ARPA/IN' denied

NW 6.5sp1.1

NAMED.NLM
Loaded from [SYS:\SYSTEM\]
(Address Space = OS)
eDirectory integrated Novell DNS SERVER
Version 6.01.02 March 18, 2004
Copyright 1997-2003 Novell Inc. All rights reserved.