by running sudo service pmta restart .

dkim-sign yes dkim-key /etc/pmta/dkim.private dkim-selector, yourdomain.com Use code with caution. 6. Starting and Verifying the PowerMTA Service

Once your configuration is saved, you must initialize the service and verify it is running properly.

Open your web browser and navigate to http://YOUR_SERVER_IP:8080 to access the PowerMTA Management Console. This interface displays real-time statistics on traffic, queue sizes, bounce rates, and delivery speeds. 7. Troubleshooting Common Installation Errors Error: License File Invalid or Expired

The -i flag installs the package, -v provides verbose output, and -h shows the progress bar. The installation creates the necessary system user ( pmta ) and directory structure.

To handle millions of emails per day, the Linux kernel must be optimized to allow high volumes of concurrent network connections. 1. Update the System Ensure your package manager repository is up to date:

dpkg -i PowerMTA-6.0r3.amd64.deb