Add one or more "A" and / or "CNAME" records. Point "www.mydomain.com", and / or "mydomain.com", to "ghs.google.com", or to a series of Google servers.
Unfortunately, all DNS hosts don't provide multiple "A" referrals / "CNAME" referral to "ghs.google.com"; some only allow for a conventional "A" referral to a single, fixed IP address.
These instructions are most often seen when you purchase the domain directly from a third party registrar, and your registrar sets up the domain itself - since when you use "Buy a domain", all of this detail is done for you.
There are thousands of registrars, all over the world, willing to sell you name registration. Not all registrars can provide the right DNS hosting service.
Of those hosts that do support the former
Point "www.mydomain.com" to "ghs.google.com".not all can support the latter.
Point "mydomain.com" to "ghs.google.com".
If StartLogic is your DNS Host, you're out of luck. See the note in the top panel?
Primary domains (domain.com) can only be routed to a valid IP address.
StartLogic only allows direction of the primary domain ("root") to an IP address ("A" referral), not to a host ("CNAME" referral).
Yet the ability to refer the primary domain is the key to successful use of the Custom Domain, as many bloggers find out. Some bloggers have, in the past, tried various workarounds like domain forwarding, which is simply not a good idea. It's possible that a server based 301 Redirect, setup properly, may accomplish this for the primary domain, if used as the secondary URL for the blog. It won't substitute for a "CNAME" referral for the "www" alias (or another alias of your choice), when used as the primary URL for the blog, though.
You have 3 - and only 3 - choices, when setting up your domain.
- A Symmetrical DNS configuration requires 2 x "CNAME" referrals, 1 for the domain root, the other for the "www" alias.
- An ASymmmetrical DNS configuration requires 4 x "A" referrals for the domain root, and a "CNAME" referral for the "www" alias.
- A Non Root Virtual Host DNS configuration requires a single "CNAME" referral, for the specific single host alias.
And now, with the addition of a second "CNAME" to verify domain ownership, the choice of registrars becomes even more important. Not every registrar will let you setup 2 "CNAME"s in any given domain or sub domain - and not every registrar will allow long "Destination" / "Target" / "Points To" addresses. If your current registrar won't allow the necessary second "CNAME", or long "Destination" / "Target" / "Points To" addresses, you'll have to move the domain to another registrar - the second "CNAME" is neither frivolous nor optional.
If you don't see any instructions in the documentation provided by your DNS Host, maybe you should contact technical support. Generally when you pay for service, and in many cases when you don't (such as with Blogger), there is a technical support staff somewhere. In many cases, a cooperative and knowledgeable support staff is another essential here.
There is no substitute for a correctly setup "A" / "CNAME" referral, at least for an alias in your domain. If your DNS host won't support the latter, or a server based 301 Redirect, you need a better registrar. You have two and a half alternatives now.
- Stay with this registrar, and use another DNS host, such as ZoneEdit.
- Transfer the domain to another registrar, such as one of the two Blogger partner registrars.
- If your primary URL is setup, and pointing to a domain alias, and the problem is simply not being able to use the primary domain for the secondary URL, maybe you can refer the primary domain through Google Apps.
A properly setup Google custom domain starts with a carefully chosen DNS host / registrar. That's the bottom line.