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kcli trace-smtp-server

Trace incoming connections made to the SMTP service.

This is a diagnostic tool for the server operator.

Connections are logged in real time.

Take care to use an appropriate --source when using this with a live busy server, as you will be overwhelmed by the traffic.

Usage: kcli trace-smtp-server [OPTIONS]

Options

  • --source <SOURCE> — Add a source (in CIDR format) to the list of source addresses that we want to filter by. If any are specified, then only connections made from a matching address will be traced. If no sources are specified, any/all incoming SMTP connections will be traced.

    Can be used multiple times to add multiple candidate addresses.

    Eg: --source 10.0.0.1 --source 192.168.1.0/24

  • --color <COLOR> — Whether to colorize the output

    Default value: tty

    Possible values: tty, yes, no

  • --only-new — Trace only newly opened sessions; ignore data from previously opened sessions

  • --only-one — Trace the first session that we observe, ignoring all others

  • --terse — Abbreviate especially the read side of the transaction trace, which is useful when examining high traffic and/or large message transmission