This is a configuration problem. Go into your accounts section of OE and make sure all your ISP server info is correct (pop3 and smtp). check with your ISP to see if the server has changed. This issue DOES not require reinstallation of the OS. If these tips do not work, post back here and we will try something else. This is solvable.


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This usually is the result of trying to send a email directly to a particular email server machine, rather than the user's generic email address. That particular server may have been retired, and the user's mailbox location moved to another server.
At any rate, to change your settings, if this is indeed the problem, try this:

Tools -> Accounts -> Mail (select the tab) -> (select the account) -> Properties (hit the button) -> Servers (select the tab)

then make sure that:

Incoming Mail Server:
"Log on using secure password authentication" is turned OFF

Outgoing Mail Server:
"My server requires authentication" is turned ON

Zo