Image providing Postfix as a service.
You should make sure you mount spool volume (/var/spool/postfix) so that you do not
lose e-mail data when you are recreating a container. If a volume is empty, image
will initialize it at the first startup.
By default it is configured for sending outbound e-mails. Otherwise, you can extend the image and configure it differently. See these examples:
- cloyne/postfix, which extends it to integrate it with tozd/sympa mailing lists service
- tozd/mail, which extends it to provide a full-fledged e-mail service with virtual users
Remember that for the best e-mail delivery external IP should match the hostname it resolves to.
If you are extending this image, you can add two scripts which will be run at a container startup:
/etc/service/postfix/run.config– to prepare any custom configuration, before anything else is run/etc/service/postfix/run.initialization– will be run after the container is initialized, but before the Postfix daemon is run