docker-mailcatcher
Mailcatcher docker image to catch emails during development.
Basic usage
There are two exposed ports. Use port 25 to send emails to, and 80 to access the web interface where your emails will be shown.
Run mailcatcher process:
docker run -d -p 1080:80 --name mail helder/mailcatcher
Link to another container to send emails:
docker run -it --link mail ...
In this example emails should be sent to host mail and port 25.
Example with a PHP container and ssmtp
ssmtp is a very lightweight send-only sendmail emulator. Let's see an example of how we can override sendmail:
# Dockerfile
FROM helder/php
RUN apt-install ssmtp && \
echo "sendmail_path = /usr/sbin/ssmtp -t" > /usr/local/etc/php/conf.d/sendmail.ini && \
echo "mailhub=mail:25\nUseTLS=NO\nFromLineOverride=YES" > /etc/ssmtp/ssmtp.conf
Now test PHP's mail() function:
docker run -it --rm --link mail helder/php php -r 'mail("to@address.com", "Test", "Testing!", "From: my@example.com");'
Open your browser at http://localhost:1080 to see your emails.