mail-sink

A forked version of stone's mail-sink with following (additional features):

• JSON structured output using slog
• Disable verbosed logging by default, can be activate by set -debug arg
• Publish connection and error count as prometheus metric, disabled by default
• Adjustable prometheus metric endpoint for host, port and http path

mail-sink is a utility program that implements a "black hole" function. It listens on the named host (or address) and port. It accepts Simple Mail Transfer Protocol (SMTP) messages from the network and discards them.

Written in Go: http://www.golang.org/ Usage:

    $ ./mail-sink -h
    Usage of mail-sink:

    -H string
            hostname to greet with (default "localhost")
    -debug
            enable debug logging
    -i string
            listen on interface (default "localhost")
    -metrics-enable
            enable metric and publish the endpoint
    -metrics-host string
            host to serve prometheus metrics (default "localhost")
    -metrics-path string
            http path where prometheus will listen to (default "/metrics")
    -metrics-port int
            port to serve prometheus metrics (default 9090)
    -p int
            listen port (default 25)

Installation

Get from source

go get github.com/yortomo/mail-sink

Container

From Github package

ghcr.io/yortomo/mail-sink:latest