hydroxide docker

This image is used for okki.hu services to provide a proton based smtp server. It is based on hydroxide - a lightweight proton bridge implementation.

usage

fetch the image

docker pull garric/hydroxide-docker

config dir

Create a config dir on the host, we will use this for most of the commands to mount as a volume:

mkdir -p $HOME/.config/hydroxide

authenticate

docker run -it \
  -v $HOME/.config/hydroxide:/.config/hydroxide \
  hydroxide auth <proton_username>

Store the printed bridge password securely.

verify login status

docker run -it \
  -v $HOME/.config/hydroxide:/.config/hydroxide \
  hydroxide status

smtp server

The following command starts the smtp server on port 1025 as an always running daemon:

docker run -d --name hydroxide \
  --restart unless-stopped \
  -v $HOME/.config/hydroxide:/.config/hydroxide \
  -p 1025:1025 \
  hydroxide smtp

requirements

• proton paid subscription
• docker

security notes

Do NOT expose the smtp port to the public world. It is insecure, and only intended for intranet usage.