lighthammer wrote:
Which records would I need? TXT, CNAME or A/AAA?
I figured you just wanted to set up another domain to map to Google Apps and validate (so just the same set of MX and TXT records as before), but I think I misinterpreted the question...
lighthammer wrote:
Would this be correct? Can I now use the new domain with the same IP address as the original IP address? My goal is to use one Linode to host two sites.
Yes, presuming that
www.mydomain.com is your new domain, and 12.234.56.78 is your Linode's public address it should be fine. There's no problem with multiple DNS names all having A records returning a single IP address.
If you also want to be able to reference just "mydomain.com" (no www) you'll want the same A record associated with just mydomain.com, or use a CNAME to map mydomain.com to
www.mydomain.com (or vice versa).
Alternatively (in lieu of any extra A records) you could also use a CNAME to make
www.mydomain.com map to the other domain name of your Linode. That way you only have to keep the actual IP address in one place in DNS.
-- David