PowerMTA route mails through another SMTP server for a domain

If you want to route emils from PowerMTA though another SMTP server, you can use following config.

In this example, all outgoing emails to @outlook.com domain will get routed through Amazon SES.

Edit PowerMTA config file

vi /etc/pmta/config

Add folowing

    queue-to amazon-ses.route



    auth-username USER_NAME_HERE
    auth-password PASSWORD_HERE
    route email-smtp.us-west-2.amazonaws.com:587
    use-starttls yes
    require-starttls yes

Restart PowerMTA

systemctl restart pmta