If you receive an error when you try to send or receive email that says the Host server could not be found, check the following items:
Make sure you are connected to the Internet
When using an email application, such as Outlook Express, you can read and write messages even when you are not connected to the Internet; however, you must be connected to actually send messages that you've already written or to receive new email messages.
Check your account settings
When using an email application, such as Outlook Express, if your server information is not set up properly, you will receive this error when trying to send or receive email. For step-by-step instructions to check your account settings, click the link next to your application below. If your application isn't listed, see the Help file in your application for assistance.
Remove old email accounts
Some email applications allow you to access several different email accounts at the same time. If your application is set up to send/receive email from an inactive email account, you will get this error. To correct the problem, delete this email account. For detailed instructions to delete old accounts, select your application below. If your application isn't listed, see the Help file in your application for assistance.
If you are not able to correct the problem, contact Customer Support.