Outlook 2002 Error 0x80042109

[Caroline]

I am unable to send or receive messages. Having spoken
to my service provider at length (1 hour)- Blueyonder, it
has been established that there is nothing wrong with the
server, or the account and the other PC networked with
mine can send and receive messages (it has Outlook 2000).
My Webmail works. Triple checked the Norton anti-virus
set up. No problems there. Finally advised, as last
resort, to consult Microsoft. How do I resolve this?

Thanks

Caroline