I explained this to you once before. AOL will not allow you to use
their SMTP server if the From address is from a domain other
than AOL.com.
Why aren't you using Yahoo's SMTP server?

Gary VanderMolen, Microsoft MVP (Mail)
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"orangecami" wrote in message ...

hey guys..when I try to send a message first it appears an error box saying
that one or more messages in my outbox do not have a valid account
specified. would u like to use ur default account to send these
messages?..and than I click yes and than I get the wind security box which
requires the user name and password, I put them in but the box reappears
again and again! then I go to to tools-accounts-servers and I uncheck the box
with the authentication box, try to send the message again and than I get
this error message:

The message could not be sent. The authentication setting might not be
correct for your outgoing e-mail [SMTP] server. For help solving this
problem, go to Help, search for "Troubleshoot Windows Mail", and read the
"I'm having problems sending e-mail" section. If you need help determining
the proper server settings, please contact your e-mail service provider.

The rejected e-mail address was '. Subject
'application', Account: 'pop.mail.yahoo.com', Server: 'smtp.aol.com',
Protocol: SMTP, Server Response: '554 5.7.1 : Sender
address rejected: Access denied', Port: 25, Secure(SSL): No, Server Error:
554, Error Number: 0x800CCC78
Plz HELP!..I just dont get it..tried everything, nothing works!