Lightmeter provides a single place to monitor Postfix mailservers. It visualises SMTP performance, and identifies common causes of mail disruption and sends notifications to reduce response time and service interruption. Through this it can be a valuable helper to administrators of email servers, notifying them of delivery issues before users become aware of them.
The Lightmeter ControlCenter comes as a single binary or Docker image and can therefore easily be added to existing mail servers.
3rd party open source
