Using Comcast for Email Sending

Per Comcast's knowledgebase at https://www.xfinity.com/support/internet/email-client-programs-with-xfinity-email/  the settings in CDE's program to send email is:
 
SMTP Server:  smtp.comcast.net
Username:   <Comcast user name>
Password:  <Comcast user password>
Use Advanced Settings to set SMTP Server Port:  Yes
SMTP Server Port: 587
Email Server requires SSL and/or TLS Mode: Yes
SSL/TLS Start Mode: Automatic