How To Install courier-mta on Debian 9

In this tutorial we learn how to install courier-mta on Debian 9. courier-mta is Courier mail server - ESMTP daemon

Introduction

In this tutorial we learn how to install courier-mta on Debian 9.

What is courier-mta

courier-mta 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.

This package provides an ESMTP daemon which uses the Maildir format as native storage format, supports IPv6, implements SMTP extensions for mailing list management and features integrated mail filtering. It can function as an intermediate mail relay, relaying mail between an internal LAN and the Internet, or perform final delivery to mailboxes.

ESMTP over TLS is handled by the regular ESMTP daemon in conjunction with the TLS wrapper.

There are three methods to install courier-mta on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install courier-mta Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install courier-mta using apt-get by running the following command:

sudo apt-get -y install courier-mta

Install courier-mta Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install courier-mta using apt by running the following command:

sudo apt -y install courier-mta

Install courier-mta Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install courier-mta using aptitude by running the following command:

sudo aptitude -y install courier-mta

How To Uninstall courier-mta on Debian 9

To uninstall only the courier-mta package we can use the following command:

sudo apt-get remove courier-mta

Uninstall courier-mta And Its Dependencies

To uninstall courier-mta and its dependencies that are no longer needed by Debian 9, we can use the command below:

sudo apt-get -y autoremove courier-mta

Remove courier-mta Configurations and Data

To remove courier-mta configuration and data from Debian 9 we can use the following command:

sudo apt-get -y purge courier-mta

Remove courier-mta configuration, data, and all of its dependencies

We can use the following command to remove courier-mta configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge courier-mta

Dependencies

courier-mta have the following dependencies:

References

Summary

In this tutorial we learn how to install courier-mta package on Debian 9 using different package management tools: apt, apt-get and aptitude.