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I currently have my AD named domain.local, and have registered a I'm considering doing a domain rename, which is supported. The idea was to change the name of my AD to, but it might be an better idea to name the domain But is this possible during the domain rename process? This might be a bit more than just a rename. Any feedback would be greatly appreciated.

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up vote 5 down vote accepted

It would be just a rename still. isn't a subdomain (really child domain in AD terms) technically in your instance. It would be the root domain name in your AD environment. You don't have to create first in order to use

And yes, definitely better to go with something like than use the same internal and external DNS name.

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As long as you don't have Exchange, this is fine. would be better than

Windows AD Domain naming recommendations

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Using the full domain as the AD domain is usually a bad idea. It can work if you actually run the DNS servers for your domain yourself so your AD DNS is actually the authoritative DNS. If your ISP runs the authoritative DNS servers and you also use as your AD domain then you are technically spoofing Your own office will only see the 'wrong' information in the AD DNS domain and not the actual information on the official DNS servers. You might not be able to see your own web site, have problems with mail etc. If DNSSEC is used this will actually break the signature chain and your internal DNS won't work at all.

Using a sub-domain like or as the AD root domain is always a good idea and prevents a lot of headaches.

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