reverse lookups are shown as AUTHORITATIVE on cache servers..!!!

[blrmaani]

I have a cache-only server [ DNSHOST2 in the picture below ]

DNSHOST1  ( authoritative DNS server for zone myzone1.com )
     |
     |
DNSHOST2  ( cache only DNS server )
     |
     |
CLIENTHOST


I executed nslookup on CLIENTHOST to lookup names and ip-addresses on
DNSHOST2.
The nslookup was executed in debug mode.


The replies for names shows as non-authoritative whereas replies for IP

address shows as authoritative. I was under the impression that all
cached
replies are always non-authoritative.

Please help me to understand this..

thanks in advance
regards
Blr