email-webtools is a small micro-service written in Go that we at Camdram use to monitor our Email systems and ensure that email receipt and delivery is functioning as expected.
At Camdram we use Postal for the sending and receiving of emails. This service connects to the Postal database in MySQL (technically MariaDB) and, when a correctly authenticated HTTP request is made, executes queries to determine the length of the mail queue and the volume of held mail.
Queued messages are messages that are actively awaiting delivery. Held messages are those that have been put to one side and will not be delivered, needing manual intervention.
We compile the project down to a single statically-linked executable which avoids having to install the entire Go toolchain on our server. Both of the methods detailed below produce a single email-webtools binary file in your working directory.
First install Docker and then run the following in a terminal window:
docker build -t camdram/email-webtools:latest .
docker run --rm -v ${PWD}:/app camdram/email-webtools:latestYou will need to install version 1.21.0 of the Go programming language (see here for details). Then run the build using the included Makefile:
make clean
make allYou'll need to create a .env config file to house the authentication settings. This should contain something along the following lines:
HTTP_SERVER: hostname
HTTP_PORT: 8080
HTTP_AUTH_TOKEN: yourauthtoken
MYSQL_USER: username
MYSQL_PASSWORD: password
MAIN_DB: postal
SERVER_DB: postal-server-1
SMTP_TO: address1@example.com,address2@example.com
The code in this Git repository is released under the MIT License.
Copyright (c) 2019 various members of the Camdram Web Team and other contributors.