The file is structured using directives and tags that define how the server listens for, processes, and sends mail:
| Command | Purpose | | --- | --- | | pmta show config | Display effective config (merged + defaults) | | pmta show queue | Show queue statistics | | pmta show stats | Real-time delivery stats | | pmta show domains | Per-domain throttling status | | tail -f /var/log/pmta/panic.log | Catch critical errors | | tail -f /var/log/pmta/smtp.log | Watch live deliveries | powermta config file
<virtual-mta marketing> <source 203.0.113.10> max-msg-rate 5/s </source> domain-throttling on max-smtp-out 200 </virtual-mta> The file is structured using directives and tags
Unlike simple INI files, the PowerMTA config file follows a hierarchical structure. It is read from top to bottom, and it is case-sensitive. The syntax relies on braces to define contexts. <smtp-listener 0
<smtp-listener 0.0.0.0:2525> smtp-service on log-connections on require-auth off host-name mail.mydomain.com </smtp-listener>