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Sometimes there is an issue with your DNS resolvers caching the domain name to IP mapping. When your trying to go to the domain it's actually pulling up an old IP address instead of looking for a new one and finding the correct record. So, to expedite this very common problem of cached DNS, please do the following steps.

Microsoft Windows XP:
Go to the Start menu, choose Run, type cmd and hit OK. When the black screen appears, type the following command and hit enter.

 net stop

Then type this command and hit enter.

 ipconfig /flushdns

Restart your application (e.g. browser or email).


Microsoft Windows Vista and Windows 7:
Click the Start orb and follow All Programs > Accessories, look for Command Prompt. Be sure to right click on Command Prompt and choose "Run as Administrator". When the black screen appears, type the following command and hit enter.

 net stop

Then type this command and hit enter.

 ipconfig /flushdns

Restart your application (e.g. browser or email).


Mac OSX:
Navigate to your Applications folder, open Utilities, and double click on Terminal. Type the following command and hit enter.

 dscacheutil -flushcache

Then type this command and hit enter.

 lookupd -flushcache

Don't worry if either command says something like "Not found".

Restart your application (e.g. browser or email).


Linux:
Open up a terminal window (ctrl T in gnome). Type the following command and hit enter.

 /etc/init.d/nscd restart

Restart your application (e.g. browser or email).

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