Prometheus exporter for monitoring the Exim Mail Transfer Agent (MTA).

Like eximstats, the exim_prometheus_exporter generates statistics from Exim's mainlog file. It does not interact with Exim directly.

exim_prometheus_exporter -mainlog /path/to/mainlog

By default, metrics are provided on https://localhost:8443/metrics. Type exim_prometheus_exporter -h to see a list of command line options.

In order to access https metrics with self-signed certificates from the Prometheus server, add something like this to the server's prometheus.yml configuration:

  - job_name: "exim-server"
    scrape_interval: "60s"
    scheme: "https"
    tls_config:
      insecure_skip_verify: true
    target_groups:
    - targets: ['mail.example.com:8443']

Make sure Go is installed and the GOPATH environment variable is set, then run

go get github.com/fstab/exim_prometheus_exporter

The executable will be created in $GOPATH/bin.

This is just a proof-of-concept. Only rejected RCPT messages are recognized, all other messages are not implemented yet. If this turns out to be useful, let's build on this example and add more messages.