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Domain Namspace

Last Modified: 2012-05-12
Okay so I know this topic can get discussed a lot - but I would like to know what might be best for my Scenario.  Brand new Company, we own the domain name ABC.com.  

15-20 users in first year - 30 by next
Mail - Provided by Google Apps (no immediate need for Exchange)
No current outside website - we just own domain and provide MX records to our Host email w/Google

Should I go with ad.abc.com for the internal namespace?  I have heard of problems with .local and issues with not using 3 letter TLD's

I want to be able to have minimal issues IF we migrate to Exchange and have minimal DNS issues within the domain.


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