: Enter your valid SparkPost license to enable the service.
The main configuration file is typically located at /etc/pmta/config . Basic Directives powermta configuration guide top
: Define which IPs and ports PMTA should listen on for incoming mail (e.g., smtp-listener 0/0:25 ). : Enter your valid SparkPost license to enable the service
: A minimum of 2GB RAM is required, though 8GB is recommended for high-volume operations. powermta configuration guide top
: Verify that Port 25 is open for outgoing traffic, as many cloud providers block it by default.