Using AT&T's version of Yahoo Email for Email sending

Refer to AT&T's website for configuration information at https://www.att.com/esupport/article.html#!/dsl-high-speed/KM1010523?gsi=YQquYAze
 
SMTP Server:  outbound.att.net
Username: Full ATT Email Address
Password:  ATT Email Password
Use Advanced Settings to set SMTP Server Port:  Yes
SMTP Server Port: 465
Email Server requires SSL and/or TLS Mode: Yes
SSL/TLS Start Mode: Automatic

Important: Your AT&T/Yahoo Account Security may need to be configured to allow apps that use less secure sign in. If this is disabled, the CDE program will usually receive a response of incorrect user name and/or password errors.  Also, the server settings may be different - please check with AT&T regarding what settings should be made.