用IE上网遇到麻烦

最近用IE上网总是出现如下提示，这是怎么回事啊？请大家帮我解决一下，先谢了！

ERROR

The requested URL could not be retrieved

While trying to retrieve the URL: http://www.126.com/

The following error was encountered:

• Access Denied.

  Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.

Your cache administrator is admin@mail.99ee.net.