Wrong port, wrong SSL setting. Use the settings specified by Gmail:
http://mail.google.com/support/bin/a...n&answer=77696
That link is for an IMAP account, which appears to be the protocol you want.
--
Gary VanderMolen, MS-MVP (Mail)
"sti380" <> wrote in message news:58A609AF-BB9C-4F8A-8457-...
> 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 'test',
> Account: 'imap.gmail.com', Server: 'smtp.gmail.com', Protocol: SMTP, Server
> Response: '530 5.7.0 Must issue a STARTTLS command first. b8sm1941604rvf.22',
> Port: 25, Secure(SSL): No, Server Error: 530, Error Number: 0x800CCC78