possible noob question - @ CNAME?

Ben Croswell ben.croswell at gmail.com
Sun Feb 8 22:41:14 UTC 2009

You can not have a CNAME at the "domain" level.  It is against RFC to have a
CNAME and any other data at the same level of a given domain tree.
i.e. the following is illegal
www    in CNAME www.blah.com
www    in MX 10 mail.blah.com

This will cause BIND to throw the zone and not load it because it is

If you put a CNAME at the domain level you are causing the CNAME to collide
with an SOA records, and 1 or more NS records at the very minimum.

-Ben Croswell

On Thu, Feb 5, 2009 at 12:36 PM, RJValenta <rjvalenta at gmail.com> wrote:

> forever ago, i set myself up with a solid bandwidth and static IPs and
> started to host websites for my friends & their small businesses.
> basically, they covered the cost of my internet access.
> so for 10 years i've been hosting my own name, mail, and web servers
> allowing me to '@ A xxx.xxx.xxx.xxx' and then to make life easy i
> would 'www IN CNAME mywebserver.mydomain.com.'  i say easy, because
> that way in the event that i changed ISPs and got new IP addresses,
> there was less chance of my screwing up a www and MX record if i made
> sure to change the two primary machines' A records properly.
> however, the '@ IN xxx.xxx.xxx.xxx' would always need to be changed
> manually.
> Is there a way around this?  is it possible in some fashion to '@ IN
> CNAME my.server.com' ?
> I ask because I'm trying to trim back here, and move my NS hosting to
> NetSol and subsequently trim back on what i have to manage.  at this
> stage in the game i'd rather have more time to not worry about my
> friend's personal website about their kids, and still be confident
> that their wife's home business website will still stay up.
> any ideas on how i can CNAME their @ record so their http://whatever.com
> will still work, but in the end, i'm only managing one domain's IP
> records?
> thanks,
> richard
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