[ALUG] Secondary/Tertiary DNS to mirror hosted DNS (123-Reg)

[Adam Bower]

On Mon, Nov 19, 2007 at 11:48:15AM +0000, Mark Rogers wrote:
> 
> configuration. Not least because as a tertiary server it won't normally 
> matter if I get it wrong :-)

Yes, it will matter. With DNS the secondary doesn't mean "if you can't
get to the first use this instead" it is just bad terminology as you
(generally) have a "master" where all the changes are made and the 
"slaves" grab this information (usually using AXFR queries) to transfer 
the changes made to the zones to themselves. With DNS there are a few
factors (depending on the dns software involved) that depend on which 
dns server will get spoken to.

You could run another server for the domain that doesn't pull the zone
from the "master" but this could lead to changes getting out of sync and
as you can never tell which server the clients are going to speak to
this will eventually cause problems. Your other option is to ask 123 if
you can setup another server that you control and see if they will let
you sync the dns from their machines to it.

Adam
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