Dear all,
I got some questions on dns as below:
I got 2 DNS servers, inX is internal DNS server and exY is external DNS
server
inX is pointing to Y DNS as its pri DNS
exY is pointing to ISP DNS as its pri DNS
correct me if I'm wrong, let say, if my internal wkst, is pointing to inX as
its dns server, whenever nslookup XXX from this wkst, it will use inX to
resolve and if inX can't resolve it shd ask help from exY and if exY can't
will ask from ISP dns... is this the way???
but what I found from my machine is, whenver I did a nslookup will shown its
pri dns server and with result as below:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[root@mail /]# nslookup www.visto.com
Server: inX
Address: inX ip address
Name: www.visto.com
Address: 206.79.140.202
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
and if I changed its pri dns to exY DNS server, the result as below:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[root@mail /]# nslookup www.visto.com
Server: exY
Address: exY ip address
*** exY can't find www.visto.com: Non-existent host/domain
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I don't know why by pointing to exY, it can't resolve ???
Any advise on how dns work, if it have have more than 1 dns to use??
Many thanks for help....
best rdgs,
gary
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