I have setup Postfix on my CentOS and configured it properly.
Now, I want to enable user authentication to avoid any spam deliveries.
I don't want a complicated setup, just a plain txt file which will keep the username/password (or MySQL database if it's also easy to setup) and avoiding the delivery of email without AUTH command in Postfix SMTP connection.
I searched on Google, read lots of articles related to Postfix/SASL but couldn't understand, couldn't make Postfix run with SMTP Auth. Is there any body out there who will be happy to explain the process step by step?
Thanks, looking forward to hear from you.