The outgoing SMTP server settings that work for Yahoo Mail are:
Your username is your complete Yahoo email address.
Some mail programs will make you confirm downloading an SSL certificate from Yahoo before sending for the first time.
You may also need to verify your POP3 settings - http://www.emailquestions.com/yahoo-mail/8141-what-pop3-settings-yahoo-mail.html
You may also need to verify your IMAP settings - http://www.emailquestions.com/yahoo-mail/7237-setup-imap-connection-yahoo-mail.html
Your username is your complete Yahoo email address.
Some mail programs will make you confirm downloading an SSL certificate from Yahoo before sending for the first time.
You may also need to verify your POP3 settings - http://www.emailquestions.com/yahoo-mail/8141-what-pop3-settings-yahoo-mail.html
You may also need to verify your IMAP settings - http://www.emailquestions.com/yahoo-mail/7237-setup-imap-connection-yahoo-mail.html
