Installing mlmmj

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mlmmj (Mailing List Management Made Joyful) is a simple and lightweight mailing list manager. It is MIT-licensed and written in C. It works with OpenSMTPd and requires no daemons so it can run on very small servers.

Requirements

You will need to configure and test OpenSMTPd.

Install

$ doas pkg_add mlmmj

You can also compile from source.

Documentation

Consult /usr/local/share/doc/mlmmj/README

OpenSMTPd and mlmmj, by default, use the delimiter +. For instance, mlmmj-test+subscribe@example.com accepts request to subscribe to the mlmmj-test email list. No special configuration is required.

To create an initial mailing list, we first create a directory for mlmmj, then run mlmmj-make-ml:

$ doas mkdir /var/spool/mlmmj
$ doas chown _smtpd:_smtpd /var/spool/mlmmj/ 
$ doas -u _smtpd mlmmj-make-ml
Creating Directorys below /var/spool/mlmmj. Use '-s spooldir' to change
What should the name of the Mailinglist be? [mlmmj-test] :
The Domain for the List? [] : example.com
The emailaddress of the list owner? [postmaster] : postmaster

Replace mlmmj-test and example.com with your real list name and domain.

For each mailing list, add an entry into /etc/mail/virtuals (see aliases(5) and smtpd.conf(5)):

mlmmj-test:  "|/usr/local/bin/mlmmj-receive -L /var/spool/mlmmj/mlmmj-test/"

Replace mlmmj-test with your real list name.

Create a log file:

$ doas touch /var/log/mlmmj.log

Then run this command once:

/usr/local/bin/mlmmj-maintd -F -d /var/spool/mlmmj/ >>/var/log/mlmmj.log 2>&1

Then add the task to your crontab:

0	*/2	*	*	*	/usr/local/bin/mlmmj-maintd -F -d /var/spool/mlmmj/ >>/var/log/mlmmj.log 2>&1

NOTE: mlmmj sends email from 127.0.0.1, which should be added to /etc/mail/hosts; localhost is not enough.

To sign up to the mailing list, simply email mlmmj-test+subscribe@example.com Replace mlmmj-test with your list name, and example.com with your domain name.

List files are located at /var/spool/mlmmj/<mailing-list-name>.