Question: what are the yahoo server settings?
Answer: Server Address: smtp.mail.yahoo.com.
Username: Your Yahoo Address (e.g. example@yahoo.com)
Password: Your Yahoo Password.
Port Number: 465 (With SSL)
Alternative Port Number: 587 (With TLS)
Authentication: Required.
Sending Limits: 500 Emails a day or Emails to 100 connections a day.