Question

I am using javax.mail.Session to configure session for
org.springframework.mail.javamail.JavaMailSenderImpl

while configuring Session object, I am passing following properties as blank

1. mail.smtp.auth
2. mail.smtp.host
3. mail.smtp.port

Despite blank properties, I am still able to send mail using JavaMailSenderImpl, What default values are being used by session/JavaMailSenderImpl in this case?

Answer 1

• mail.smtp.auth – Attempt to authenticate the user using the AUTH command, if true. Defaults to false
• mail.smtp.host – The SMTP server to connect to
• mail.smtp.port – The SMTP server port to connect to, if the connect() method doesn’t explicitly specify one. Defaults to 25