What is my SMTP server for Sbcglobal net?
SMTP: smtp.att.yahoo.com, Security SSL, Port 465. Make sure that you also have in the Outgoing server tab, that "My outgoing (SMTP) server requires authentication." is checked, and that "Use the same settings as my incoming mail server is tic'd.
sbcglobal server settings
sbcglobal mail settings
sbcglobal email server settings