I couldn’t find a direct, official link to a PowerMTA configuration file in your message — but if you’re looking for the or a reference/sample config , here’s what you need:
PowermTA is a highly scalable, open-source email server that enables you to manage high volumes of email with ease. One of the critical components of PowermTA is its configuration file, which determines how the server operates. In this article, we will explore the PowermTA config file link, its importance, and how to work with it. powermta config file link
/etc/pmta/config