couriermlm command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

couriermlm: command not found

or when using sudo you get the following error message

sudo: couriermlm: command not found

Solutions to couriermlm: command not found

How To Fix couriermlm: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu couriermlm is provided by courier-mlm package.

courier-mlm is:

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, TLS, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework.

The couriermlm command sets up, maintains, and runs a mailing list. It automatically handles subscribe and unsubscribe requests, and removes undeliverable addresses from the subscription rolls. Mailing lists managed by couriermlm require zero human administrative oversight. It supports digests, write-only posting aliases, and moderated mailing lists.

To fix this problem, we can install more using the command below.

sudo apt-get -y install courier-mlm

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install courier-mlm.

sudo apt -y install courier-mlm

Or if you have aptitude installed you can use the following command.

sudo aptitude install courier-mlm

Summary

In this tutorial we learn how to fix couriermlm command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.