won't send e-mails everytime

[charlie]

I have multiple e-mails and pull them down to my computer with no problem
however when I try to send emails some times it works and other (most of the
time) it doesn't and I have to play with the properties to see if I can
eventually send my mail. How do I set this once so I don't have to play with
again. here is the error message I 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: More
Missions info', Account: 'Charlie & Kathy', Server: 'smtp.att.yahoo.com',
Protocol: SMTP, Server Response: '553 From: address not verified; see
http://help.yahoo.com/l/us/yahoo/mail/original/manage/sendfrom-07.html553
From: address not verified; see
http://help.yahoo.com/l/us/yahoo/mail/original/manage/sendfrom-07.html',
Port: 25, Secure(SSL): No, Server Error: 553, Error Number: 0x800CCC78get:

 

[Guest]

I have multiple e-mails and pull them down to my computer with no problem
however when I try to send emails some times it works and other (most of
the
time) it doesn't and I have to play with the properties to see if I can
eventually send my mail. How do I set this once so I don't have to play
with
again. here is the error message I 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:
More
Missions info', Account: 'Charlie & Kathy', Server: 'smtp.att.yahoo.com',
Protocol: SMTP, Server Response: '553 From: address not verified; see
http://help.yahoo.com/l/us/yahoo/mail/original/manage/sendfrom-07.html553
From: address not verified; see
http://help.yahoo.com/l/us/yahoo/mail/original/manage/sendfrom-07.html',
Port: 25, Secure(SSL): No, Server Error: 553, Error Number: 0x800CCC78get:

Have you been to the website in the error message yet?

However, it seems to take you to the wrong place if there's certain
punctuation
next to it.

http://help.yahoo.com/l/us/yahoo/mail/original/manage/sendfrom-07.html