I am having the same issue...I can receive from my pop3 account, but my SMTP
server sends back the following authentication error:

Task 'Celerus - Sending' reported error (0x800CCC80) : 'None of the
authentication methods supported by this client are supported by your server.'

I verified with another computer that the server was responding to Office
2003 with no issues. Same setup, same account login information, Office 2003
works, 2007 gives the error above.

"BillR [MVP]" wrote:

Check your account settings. Set the account up manually. You might need not
authentication to send at all.

--
Bill R MVP
"agreeb245" wrote in message
...
here is what OL 2007 STATED ON TEST:
Send test e-mail message: None of the authentication methods supported by
this client are supported by your server.
--
Andrew Greenbaum