DNS setting & Network Design

Dear All,

I have register my own DNS in Directnic.
IP : 202.123.123.123
Host : ns1.sample.com

Here is my Setting
1.) I set up firewall
IP 202.123.123.123 NAT (Port 53) => 192.168.1.5
IP 202.123.123.123 NAT (Port 110) => 192.168.1.6
2.) I set up one Linux Bind in one PC (host name:ns1.sample.com, ip
is 192.168.1.5

In BIND record
sample.com
NS1 A 202.123.123.123
MX 5 mail.sample.com
mail A 202.123.123.123

Am I right? can i resolve the ns1.sample.com??

looks right, why don't you try yourself? here are some cgi tools I
wrote: http://xzziroz.freeshell.org/nettools.html

one includes a hostname resolving tool

--K-sPecial