Outlook email prob [error sending (0x800CCC0F)]

I can receive my email but I can't send, forward, or reply to any. When I try to I get the error:

"Task pop.*****.net-sending reported error (0x800CCC0F): 'The connection to the server was interrupted. If this problem continues contact your server administrator or ISP'.

1 If it is a problem with my DSL why don't I have any problems with the web? It seems as fast as normal.

2 My Norton says I am clean.

 

My first guess would be the outgoing mail server was entered incorrectly.

What version of Outlook?
Or is it Outlook Express?

Who is your ISP?

 

Oh also check your outbox for a e mail with a large atachment in it.

 

1 I have XP Pro without the service pack and use Outlook, not Outlook Express.
2 I don't see how anything in the outgoing mail server data got changed and why would incoming have no probs?
3 I use Earthlink and have for years
4 The email account is the same for home and work and nothing has been changed on this 'puter since I got it.
5 I don't get a prompt for credentials when I hit send/receive. It says it is sending but then I get the aforementioned error message and the email gets put in the Outbox where they pile up.

 

Stay on us Arie, I didnt even notice.

 

FYI my problem was solved. Apparently Earthlink changed my outgoing SMPT server without telling me, real nice.
Thanks for all the help