PowerMTA is a high-performance SMTP MTA used for large-scale email delivery. Below is a concise, actionable top-level guide covering installation notes, core configuration, deliverability best practices, monitoring, and sample config snippets to get started.
Provider Specific: Use stricter limits for sensitive providers like Gmail. powermta configuration guide top
<virtual-mta primary>
dkim mydkim
</virtual-mta>
You can group these into a
<bounce-handler process-bounces> pattern-file /etc/pmta/bounce_patterns/all.ptr source-interface 127.0.0.1 # Local feedback only </bounce-handler> You can group these into a to load-balance
Top PowerMTA Configuration Tips