Before v6.0r3, PowerMTA relied heavily on individual configuration files. This release introduced or refined:
Note: 60r3 is not the latest version (as of 2026), but it remains widely used due to its stability. Newer versions (e.g., 7.x) have additional features like REST API and native IPv6 pools. powermta 60r3
If you decide to modernize, consider:
<domain yourdomain.com> dkim-sign yes dkim-signature dkim._domainkey.yourdomain.com dkim-private-key /etc/pmta/keys/dkim-private.pem dkim-selector default dkim-headers "From:Subject:Date:To" </domain> Before v6