Re: [cobalt-users] DNS question

[Gerald Waugh <gwaugh@xxxxxxxxxxxxxxxxxxxxxxx>]

On Sat, 2 Aug 2003, Andy Jacobs wrote:
>
> I use 123-reg for all my domain names and usually just transfer the
> nameservers once I've bought a new domain.  Through their control panel, I
> can manage the DNS, creating A records and MX records.
>
> So, if the nameserever are pointed at the 123-reg nameservers and I set up A
> and MX records, what would I need to do on my server to host the site.


You would not run DNS on your server, since the authorative nameservers
are at 123-reg.

> My plan is that in the event of a serious HW failure on my Raq, I could set
> the sites up on my second server and then just change the A and MX records.
> This would hopefully mean that the sites would be live quickly, rather than
> waiting 24 hours for the nameservers to update in which time I would
> probably have the broken Raq fixed anyway.

This would depend on several things.
How soon 123-reg actually makes the cahnges.
and Nameservers on the Internet will have your records cached.

Can you change TTL at 123-reg?
If so make it a low value, say 3600 for 30 minutes.


> I tried setting the domains up with 4 nameservers and then just set up
> identical DNS settings on both servers but things seemed to get confused.
> Mail would be sent to one server but the user would pick up mail from the
> other one and not receive it, things like that.
>
> Is there a better way of achieving some sort of redundancy?

Yes, but it gets complicated.

Gerald
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