Vista only has SP1. If you installed something called "SP2", it is rogue.
The email address to which you were sending "netzero.net" is incomplete.
It needs to be something like username@xxxxxx.
--
Gary VanderMolen, MS-MVP (Mail)
"Windows Microsoft Outlook (Vista)" <Windows Microsoft Outlook (Vista)@discussions.microsoft.com> wrote in message
news:3C457FAC-6A9D-4EEE-8F91-BC8A8DB3A715@xxxxxx
Quote:
>I get the following message when I send email. Didn't start happening until
> my computer automatically updated my Windows Service Vista Pack 2.
>
> 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 'netzero.net'. Subject '', Account:
> 'home1014', Server: 'smtp.netzero.net', Protocol: SMTP, Server Response: '553
> Domain name required', Port: 25, Secure(SSL): No, Server Error: 553, Error
> Number: 0x800CCC78
>
>