It seems that Microsoft recommend that you use your companyname.com for example as the forest root domain name.
I originally didn't follow this, for example, i called my forest root WOODLANDS.FARM. At the time .FARM would not have been a valid TLD so i knew it wouldn't conflict with any external site in terms of DNS.
Now that .FARM is a valid TLD, the actual domain name www.woodlands.farm has been taken and is registered with GoDaddy. If i try to visit that website externally, off site from the company it works fine and you can access it. However, if you try to get to WOODLANDS.FARM from within the company network, it directs me to the local intranet, which is what i would expect.
At this point, although unlikley, what if a person from within the company needed to get to the external website www.woodlands.farm? It will just redirect them to the intranet.
Why do Microsoft recommend that you use this naming convention if that is the case? Do i just go into DNS and change it so that it no longer links to the intranet? The last thing i want to do is mess around with DNS and then break Active Directory in some way!
I hope that makes sense and that someone can clear this up.
Thanks very much!