What is SWAKS?

Swaks is a featureful, flexible, scriptable, transaction-oriented SMTP test tool. Features include:

• SMTP extensions including TLS, authentication, pipelining, and XCLIENT
• Protocols including SMTP, ESMTP, and LMTP
• Transports including unix-domain sockets, internet-domain sockets (IPv4 and IPv6), and pipes to spawned processes
• Completely scriptable configuration, with option specification via environment variables, configuration files, and command line

SWAKS version

This image uses SWAKS 20190914-0 (full changelog)

Info

This image is based on the popular Alpine Linux project, available in the alpine official image. Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general.

Usage

Refer to this doc for command line options

Simple

docker run --rm \
           flowman/swaks \
           -f from@mail.dev -t to@mail.dev -s hostname -p 25

Seting specific timezone

docker run --rm \
           -e TZ="Europe/Berlin" \
           flowman/swaks \
           -f from@mail.dev -t to@mail.dev -s hostname -p 25

Using an alias

Just put the following into your .bash_profile

alias swaks='_cmd() { docker run --rm -e TZ="Europe/Berlin" -v "$PWD":/root freinet/swaks "$@";}; _cmd'

Now you can even use a .swaksrc in your working directory and pull in attachments from there...

swaks -f from@mail.dev -t to@mail.dev -s hostname -p 25 --attach eicar.zip