Q5 = can of worms... man
That is the question of the new year. While it is easy to change the server name, the consequences can be a nightmare.
See:
Ensim Server Setup - Questions ????
and
ensim.rackshack.net?!
And you normally don't name the server "www", but instaed name it something like "host1" or "server1", names like "www", "mail", "ftp","pop", are not usually used without consequence for a server.
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Q3. During the signed up process, it asked us for a domain name for the new server, right? How shoudl we host that domain? IP-based or name-based?
I have asked that question before and not had any answers. I have an opinion, but I'm still waiting for someone to say what the best practices are. And since my server is toast right now [due to name change problem above] I can't try anything.
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Q4. When I type "http://serverIPAddress", it goes to the site/user Administrator's login page. I want to make it to show my main site's content, not the login page. How do I do that?
This will not go to your site content until you have one and have ftp some files there.
As far as Q5 goes, I have confidence RS will resolve this issue and we will all be happy with our Ensims.