What (like Grafana, Datadog, or Zabbix) do you already use? Do you use multiple Virtual MTAs or IP pools ?
Monitor your sender score via free tools like Google Postmaster Tools and Sender Score.
Optimizing Email Infrastructure: A Comprehensive Guide to PowerMTA Monitoring 1. Introduction
For high-volume senders, isn't just about ensuring the server is "on"—it’s about proactive deliverability management. If you are struggling with fluctuating throughput, unexpected deferrals, or sudden drops in inbox placement, you need to monitor better .
PowerMTA may show messages as delivered even when they never reached the inbox—they were accepted by the receiving server but then filtered to spam or discarded. To get the full picture, you need to incorporate:
To effectively monitor PowerMTA, focus on the following key metrics:
