A widely adopted modern approach involves using a Prometheus exporter designed for PowerMTA. The exporter scrapes statistics from the PowerMTA HTTP API or text logs and converts them into time-series metrics.
The pmta command-line tool is invaluable for quick troubleshooting and shell scripting. Key commands include:
By default, PowerMTA includes a built-in HTTP daemon that serves a web-based graphical interface. Accessible via a configured port (usually 8080), it provides a real-time snapshot of: Active queues and their sizes. Global and per-source/per-VirtualMTA traffic statistics.
Logs all hard and soft failures with exact SMTP error strings. powermta monitoring
View total active sessions to understand the current flow of email traffic. Configuration:
PowerMTA comes equipped with built-in tools that serve as the foundation for any monitoring stack. The PowerMTA Web Management Console
As per 2026 best practices, it is necessary to auto-suppress hard bounces and manage recurring soft bounces to maintain a healthy list. 4. Throughput/Sending Speed What it is: Messages per second (MPS) sent. A widely adopted modern approach involves using a
Prometheus acts as the time-series database. It is configured to scrape the exporter port at regular intervals (e.g., every 15 seconds), storing historical records of queue sizes, delivery rates, and error codes. Step 3: Grafana (Visualization)
For email service providers (ESPs), monitoring guarantees you can validate delivery speeds and bounce rates to your clients. 2. Core PowerMTA Metrics to Track
Watch for retry intervals climbing unexpectedly. Key commands include: By default, PowerMTA includes a
Ideal for time-series metrics like queue sizes, connection counts, and CPU utilization.
PowerMTA comes with a native —a graphical interface that provides a snapshot of current traffic, queue sizes, and historical data. It’s the easiest way to see what's happening right now . You can enable this in your config file under the web-monitor directive. Command Line Interface (CLI)