i can receive but not send "authentication"

[receives but not sends authentication]

here is my error message:

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 'Fw: Welcome
to Windows Mail', Account: 'incoming.verizon.net', Server:
'outgoing.verizon.net', Protocol: SMTP, Server Response: '550 5.7.1
Authentication Required', Port: 25, Secure(SSL): No, Server Error: 550, Error
Number: 0x800CCC78

 

[Gary VanderMolen]

Make sure you have send authentication enabled.
Go to Tools, Accounts, select that account, Properties, Servers.
The box for "My server requires authentication" must be checked.

 

[PA Bear [MS MVP]]

Contact your ISP for the correct settings.

receives but not sends "authentication"" <receives but not sends