use a domain in an A record?

[Michael Kjorling]

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Or SOA. In general it is safe to say that you cannot CNAME a SLD
(second level domain).

However, you could do (for example)

	www.mydomain.ca. IN CNAME www.someotherdomain.ca.

And repeat it for the required records.

As far as using CNAMEs, I guess there are about as many different
opinions as there are DNS admins. For me, they saved me from having to
manually update some 35 zones (perhaps 70-80 CNAMEs that would
otherwise have been A RRs) when my IPs changed abruptly. (And no, I
didn't have time to find or write a tool to automate the process - I
was literally caught on the bed by my ISP when they called and said
that they had finished the router reconfiguration.)


Michael Kjörling


On Nov 7 2001 12:30 -0800, Will Yardley wrote:

> Jeffrey J. Bacon wrote:
> >
> > Can I use do this:
> >
> > mydomain.ca. IN A someotherdomain.ca.
> >
> > or do I have to use an IP where I have someotherdomain.ca
>
> address records map names to IP addresses, so no.
>
> you could do:
> mydomain.ca.	IN CNAME someotherdomain.ca.
>
> provided that 'mydomain.ca' isn't going to be used as an MX or NS
> record.  in general it's cleaner to use A records unless absolutely
> necessary (IMHO at least)....
>
> w

- -- 
Michael Kjörling  --  Programmer/Network administrator  ^..^
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(Joyce Sequichie Hifler, September 13 2001, www.hifler.com)
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