Could not connect to SMTP host: email-smtp.us-east-1.amazonaws.com, port: 465, response: -1

Question

I am trying to send email with Amazon\'s SES/SMTP and I am getting the following error:

javax.mail.MessagingException: Could not connect to SMTP host: em

Answer 1

These settings worked for me:

mail.transport.protocol=smtp
mail.smtp.port=25
mail.smtp.auth=true
mail.smtp.starttls.enable=true
mail.smtp.starttls.required=true
mail.smtp.host=email-smtp.us-east-1.amazonaws.com
mail.smtp.user=[SMTP username]
mail.smtp.password=[SMTP user password]

If you try to connect to connect using SSL connection, it rejected the connection. So you need to do STARTTLS after connection.

You can add mail.debug=true to see where it failed.

The sender email address must be a verified email address otherwise SES refuses to forward the email.