[VoIP] Strange DNS weirdness

[Martin Harriss]

Jayson,

Since you have a Linux system handy, why not just run your own DNS 
server?  That's what I do (although mine also serves my own internal 
network.)

It's quite easy to set up a "caching name server" that will handle 
requests by going to the root name servers and working down from there. 
  It will also cache DNS data until the specified time-to-live expires, 
so many (most?) lookups are almost instantaneous.

The mechanics of doing this are somewhat distribution dependent, but at 
least some distros have a package that will set this up for you.

Two things to remember:

- set up the DNS access controls so that only your systems can access 
your DNS server;

- make sure you keep up to date with DNS patches - there have been some 
nasty exploits against DNS in the past.

Let me know if I can be of any help.

Martin