It appears that your firewall may be blocking Box.net or you are encountering an error.

Please contact your IT administrator to configure your firewall to recognize all sub-domains of .box.net and .boxcdn.net. The ports that should be opened for these domains are 80 and 443.

If that does not resolve the issue, then please submit a support ticket at http://www.box.net/help.
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Help › Not receiving notification emails
If you are not receiving emails from Box.net, please check your email account's Spam or Junk folder to ensure the message was not filtered. If the message was filtered, you may find an option to 'Mark as good' or 'Add sender to white-list.' This will aid in receiving future emails from Box.net.

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