This error can appear if you have ‘notify me if there are any new newsgroups’ selected but don’t have a news account set up. Go to TOOLS > OPTIONS > GENERAL TAB and untick this option.
If Norton Antivirus is installed then read this article.
Can you get web pages? If so then you may just have the wrong mail server typed into your account details or the server may be down
If you cannot get web pages then hang up and try connecting again
Reboot the computer and try again
If it’s still not working and you are not getting any web pages, then data may not be moving across the network properly. Check DNS numbers, remove and then reinstall TCP/IP in Control Panel > Network.