to scrape the PMTA XML API and feed metrics into Grafana dashboards. Elasticsearch (ELK Stack) : Best for deep-diving into logs. Ship
PowerMTA offers a Command Line Interface (CLI) and an HTTP API that outputs XML or JSON data regarding current queues, status, and configuration. Instead of scraping text files, configure a data shipper (such as Fluentd, Logstash, or a custom Prometheus exporter) to query the PowerMTA HTTP API at regular intervals (e.g., every 10 to 30 seconds). Step 2: Centralized Storage in Time-Series Databases
Standard monitoring solutions often fail in three major areas: powermta monitoring better
: PowerMTA includes a command-line query tool and file export capabilities (text, XML) for automated scripting and deep-dive analysis. 3. Critical Metrics for Delivery Success
High-volume sending requires thousands of simultaneous connections. Running out of allocated file descriptors will cause PowerMTA to drop connections unexpectedly. How to Build a Modern PowerMTA Monitoring Stack to scrape the PMTA XML API and feed
Standard monitoring tells you if the service is "up." monitoring tells you why your Gmail deliverability just tanked or which specific VirtualMTA is hitting a rate limit. If you want to move beyond basic oversight, here is how to make your PowerMTA monitoring better. 1. Move Beyond the Web Monitor
Monitoring PowerMTA Better: The Ultimate Guide to Enterprise Email Deliverability Instead of scraping text files, configure a data
"timestamp": "2025-04-01T14:32:10Z", "vmta": "marketing-high-trust", "domain": "gmail.com", "action": "perm-fail", "dsn": "5.7.1", "enhanced_code": "550-5.7.26", "message": "Unauthenticated email from ip [192.0.2.50] is not accepted due to domain's DMARC policy"
Tracking active connections helps you ensure you are adhering to recipient server limits while fully utilizing your available bandwidth.
focuses on actionable metrics that prevent delivery failures, not just report them. 2. Core Metrics to Monitor for Better Performance
<acct-file logs /var/log/pmta/acct.csv> acpt-file-name /var/log/pmta/acct-main-%Y%m%d.csv temp-fail-file-name /var/log/pmta/acct-tempfail-%Y%m%d.csv perm-fail-file-name /var/log/pmta/acct-permfail-%Y%m%d.csv </acct-file>