When I configure the library to user SMTP server from Yahoo or Google, the sending fails.

I am using Yahoo configuration settings from here: https://help.yahoo.com/kb/SLN4724.html

When using port 465 I get the following error:
Failed to send email to: abc@xyz.com: javax.mail.AuthenticationFailedException: 535 5.7.0 (#AUTH005) Too many bad auth attempts..

When using port 587 I get the following error:
Failed to send email to: abc@xyz.com: com.sun.mail.smtp.SMTPSendFailedException: 450 Requested mail action not taken: mailbox unavailable.