Domain Controller

Hi

I am building a new domain controller and need to know what is the best domain name to assign to it.  Currently we have one domain with the name comanyA.com, now I need a second domain and need to assign a separate name.

Thank you
Jack_son_Asked:
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Seth SimmonsSr. Systems AdministratorCommented:
make the name useful; something consistent with its purpose, business unit or function
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Walter PadrónCommented:
Usually it is not your call, management or marketing suggest new domain names, sometimes the domain name is already bought. If is a subdomain subdomain.companyA.com follow @Seth Simmons advice.
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zalazarCommented:
Try to use a domainname which does not exist on the Internet.
I would actually use a more generic name than something that refers to the business.
Because if the business name changes it will be almost impossible to change the domainname to something else.
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Jack_son_Author Commented:
ok, will this work, this is not for external dns  use:   corp.com
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Walter PadrónCommented:
Actually corp.local would be better.
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zalazarCommented:
If you do not plan to use any Internet services  corp.com  is fine.
.local  can be chosen also. Only please keep in mind that lately there is a recommendation by Microsoft not to use this .local suffix. Please see this article:
http://technet.microsoft.com/en-us/library/cc738121(v=ws.10).aspx
<quote>Using single label names or unregistered suffixes, such as .local, is not recommended.</quote>
This is mainly because of Office365 where domain names with the suffix .local can't be verified by Microsoft.
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Jack_son_Author Commented:
ok, so the .local would not matter only for an internal domain?
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Walter PadrónCommented:
@zalazar is hard not to use any internet services, with corp.com he ends up with a Split DNS configuration.

Another option is to use ad.corp.com for your internal domain, set the netbios name as CORP and the UPN to (@corp.com)  so users can logon as CORP\username or  username@corp.com
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