cant send emails please help

[melis]

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 'did u get
this?', Account: 'Live', Server: 'smtp.live.com', Protocol: SMTP, Server
Response: '550 5.7.3 Requested action aborted; user not authenticated', Port:
25, Secure(SSL): Yes, Server Error: 550, Error Number: 0x800CCC78

 

[Bruce Hagen]

Check yout account settings. The port number appears to be wrong. (OE
instructions are the same for WinMail).

How to add your Hotmail account to Microsoft Outlook Express
http://windowslivehelp.com/solution.aspx?solutionid=99d4b13d-13db-40d8-9cdf-172002d4194c

Hotmail and MSN Accounts POP3/SMTP Access
http://liveunplugged.spaces.live.com/Blog/cns!F92775FC46A390CA!422.entry?sa=88094129

 

[Gary VanderMolen [MVP]]

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