YOU need a DNS server to be the AUTHORITATIVE server for your IP address.  YOUR
DNS server will tell all the other DNS servers what IP address to translate your
domain name to and they will only trust the authoritative server when updating. 
Even if you setup Bind on your Esmith box, it still has to be added to the
registrar as an authoritative server (IIRC).

>  I am getting ready to make my e-smith webmail server visible/accessible from
> the Internet.  I have purchased a domain name from Verisign.  But I do not
> have a DNS server.  Verisign requires that I give them the names of two
> DNS servers. I don't understand why ***I*** need a domain server.  I
> understand why ***you*** need one, so that ***you*** can translate
> domain name to ip.  But why do I need one at all?
> 
> SO I need to get two DNS servers; since I already have my own particular
> domain name, what should I do?  I don't have any extra computers
> laying around to set up bind.
> 
> Is there anything else I need to do to get "mydomainname.com" to work; I
> mean is there anything else I need to do to get myself visible, accessible
> from the Internet, or anthing else I need to do to keep Verisign happy? (I
> realize these questions are not well-worded, sorry.)