I can't send emails via Windows Mail

[Guest]

Hi
I got a different one here for you. I can send emails in WM when it's just
to one person or when I'm replying to someone's email but, I've just tried to
send to a group email with attachments (which I've done previously with
Outlook with no problems) and I get the following error and yes I have
followed the troubleshoot instructions with no luck. My ISP provider is
Optusnet, I use Nortons.
Error reads:
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 '(e-mail address removed);'. Subject 'OCTOBER
PERFUME PRICE LIST', Account: 'mail.optusnet.com.au', Server:
'mail.optusnet.com.au', Protocol: SMTP, Server Response: '550 5.7.1
<[email protected];>... Relaying denied. Proper authentication
required.', Port: 25, Secure(SSL): No, Server Error: 550, Error Number:
0x800CCC79
PS: ( I have put the xxx to hide the person's name and company - but there
is nothing wrong with email address I've used it before).

If anyone can give me some assistance on this it would be greatly appreicated.

Thanks
Cams

 

[Gary VanderMolen]

Go to Tools, Accounts, select the mail.optusnet.com.au account,
Properties, Servers. Make sure "My server requires authentication"
is checked.

Gary VanderMolen