I've had the same problem after buying a new computer with Windows Vista.
After researching & setting up the server, my error messages in trying to
send e-mails read:

The connection to the server has failed. Subject ''none, Account:
'pop.att.yahoo.com', Server: 'smtp.att.yahoo.com', Protocol: SMTP, Port: 25,
Secure(SSL): No, Socket Error: 10060, Error Number: 0x800CCC0E

and also

Account: 'pop.att.yahoo.com', Server: 'pop.att.yahoo.com', Protocol: POP3,
Server Response: '-ERR [AUTH] invalid user/password', Port: 110, Secure(SSL):
No, Server Error: 0x800CCC90, Error Number: 0x800CCC92

ANY ADVICE? After trying the download, message stated download wasn't
necessary I think.

Tried this. Downloaded the update. It didn't work. Any other ideas? (Tried to
download again; got message that I couldn't.)

"Gary VanderMolen" wrote:

Try Microsoft's fix:

http://support.microsoft.com/default.aspx/kb/941090
"Messages may be stuck in the Outbox when you use Windows Mail on a
computer that is running Windows Vista"

That page offers two download options. Unless you know for sure
you have 64-bit Vista, use the 32-bit option.
--
Gary VanderMolen [MS-MVP WLM]


"mikeskoda" wrote in message ...
I have a message stuck in my outbox that cannot be moved or deleted.Now when
I open windows mail it brings up a pop up saying you have one or more
messages in your outbox do not have a valid account specified would you like
to use your default account to send these messages ?I have to click no then
its starts send and receive
I have spoken to my ISP provider they cannot help.Help please its very
annoying and its slowing up the e-mail opperation