Re: O2 outgoing mail

"Gary VanderMolen (MVP)" wrote:

Make sure you have send authentication enabled.
Go to Tools, Accounts, select that account, Properties, Servers.
Enable the "My server requires authentication" option.

If that setting was already checked, was your Internet connection
being provided by O2 when you got that error?

Gary VanderMolen, Microsoft MVP (Mail)

"Quentin" <Quentin@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:9D344CDF-7B22-4008-9F6E-80D141DBC668@xxxxxxxxxxxxxxxx
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 'quentiDDSDa@xxxxxxxxxx'. Subject ':)',
Account: '', Server: '', Protocol: SMTP, Server Response:
'550 5.7.1 Relaying not allowed: micknoemaildjd@xxxxxxxxxx', Port: 25,
Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79