DNS Solution

This is a temporary solution for those experiencing problems with accessing battlemaster.org. Remember to undo the changes after the problem is solved, or you'll be unable to access the site if it changes server in the future.

Thanks for those who provided the information(among them Tom Vogt, Märt Reose, Timothy Collet, Joe Truba, and Phillipe Schumacker), and Ethan Lee Vita for gathering all together and answering many questions on IRC (which is where you should go if you still have doubts or questions).

Basic Information

Battlemaster Server IP Address: 213.191.86.88
Battlemaster's nameserver IP address: 87.230.93.98
Related Hostnames: battlemaster.org, wiki.battlemaster.org, news.battlemaster.org, bugs.battlemaster.org

Linux

Filepath: /etc/resolv.conf
Add: 87.230.93.98 alongside the others
I.e. new line: "nameserver 87.230.93.98"

Mac OS X

Go to:
System preferences >> network >> advanced (or whatever it's called in english), then the DNS tab and add it there.

Windows Vista

Go to:
Start >> all programs >> accessories >> right click on Notepad, run as administrator.
File >> open >> navigate to C:\Windows\System32\Drivers\etc and open the file "HOSTS"
You have to set it to open all files. Do this by changing it to check for all files instead of just .txt
Add: 213.191.86.88 battlemaster.org (as new line)
Go to:
battlemaster.org in your browser (not www.battlemaster.org)
If you want to access the wiki or the lists, you must also add:
213.191.86.88 wiki.battlemaster.org
213.191.86.88 news.battlemaster.org
213.191.86.88 bugs.battlemaster.org
Make sure the file is editable by right clicking it and unchecking the box that says "Read Only" (or similar)

Windows XP

Go to:
C:\windows\system32\drivers\etc and open hosts file in notepad.
Add: 213.191.86.88 battlemaster.org (as new line)
Save(NOT AS TEXT FILE)
Go to:
battlemaster.org in your browser (not www.battlemaster.org)
If you want to access the wiki or the lists, you must also add:
213.191.86.88 wiki.battlemaster.org
213.191.86.88 news.battlemaster.org
213.191.86.88 bugs.battlemaster.org
Make sure the file is editable by right clicking it and unchecking the box that says "Read Only" (or similar)

Windows XP - ADSL users

If you are an adsl user:
Go to:
Control Panel >> Network connections >> right clicked Local connection then properties
Under TCP/IP protocol (double click it), add the IP address given (87.230...) as secondary DNS (Dynamic Name Server) and keep the Primary DNS referring to your router.

If you have no router, set the DNS of your service provider as primary (you can get it by typing "ipconfig /all" in the
command prompt. Use Start->run->CMD to call the console)