can @ be CNAME?

[Tech W.]

Thanks a lot Matthew.

> 
> CNAME records are special.  You can't have any other
> records for a label
> where you have a CNAME record (well, with the exception of
> RRSIG records
> if you're using DNSSEC).  This is covered in great
> detail in any
> introductory text on DNS.
> 
> The principle reason to want to have a CNAME record at the
> apex of a
> zone is to make http://example.com/ be a synonym for
> http://www.example.com/.  The way to deal with
> that is to turn it round
> and make www.example.com be the CNAME record, and have the
> A record at
> example.com.  Or just have A or AAAA records at both
> example.com and
> www.example.com
>