"Andy Roo" <Andy
Roo@discussions.microsoft.com> wrote in message
news:2A96D642-44A0-4DD2-BEF5-DD353D46CF2F@microsoft.com...
>I get the following message when trying to send mail, using Microsoft mail
>on
> Vista (it was fine until today!). Windows help doesn't open properly,
> hence
> this post.
>
> "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 'xxx' [edited for privacy]. Subject 'JASC
> 7', Account: 'mail.iom.com', Server: 'mail.iom.com', Protocol: SMTP,
> Server
> Response: '550 You must SMTP Authenticate before sending to 'xxxx' [edited
> for privacy], Port: 25, Secure(SSL): No, Server Error: 550, Error Number:
> 0x800CCC79"
>
> Hope someone can help.
Tools | Accounts
Select the account.
Click Properties.
Go to the Servers tab.
In the Outgoing section click the box for My server requires authentication.
--
Frank Saunders, MS-MVP OE/WM
Do not send mail.