Why do we have a .local extension???

Why do I have to have a .local extention on my windows 2003 domain?

I have been asked the reasoning for this and I am not really too sure.

Why can I have it set to <domainname> instead of <domainname>.local or .com ?

A good explanation please =)
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georgecooldudeAsked:
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SembeeCommented:
.local is usually used so that the naming convention doesn't clash with anything on the Internet. When AD first came out it was what many people were recommending as the convention to use, but many now prefer to use a real domain name.
Another naming convention that I like to use is something like ad.domain.com

Active Directory uses DNS, so the name needs to be dns compatible so that DNS service works correctly.
That means domain.com at least.

Simon.
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georgecooldudeAuthor Commented:
But if your not linking to an external server and dont need the use of .com do you really need to use .local?

I still dont get why its needed?

a server name of DOMAIN wouldn't clash on the internet. So why do you need DOMAIN.local ?
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SembeeCommented:
You cannot have a DNS name of single name - it isn't allowed. A domain is made up of two parts - the unique name (DOMAIN.com) and the TLD (domain.COM).
As AD is based on DNS you need to use a DNS naming convention.

If the server is not going to be connected to the Interent then you could use a non-unique name, but you also have to think about the future. In six months time it might have Exchange or another email server added to it. The name will then clash and the only way to resolve it is to rebuild the domain.

A .local domain name will never clash as it isn't a valid internet top level domain name.

Simon.
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georgecooldudeAuthor Commented:
Thanks for your help =)
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Windows Server 2003

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