pop3d command not found

Introduction

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

pop3d: command not found

or when using sudo you get the following error message

sudo: pop3d: command not found

Solutions to pop3d: command not found

How To Fix pop3d: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu pop3d is provided by courier-pop package.

courier-pop 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 provide the POP3 daemon for Courier. It only supports email stored in the Maildir format.

POP3 over TLS is handled by the regular POP3 daemon from in conjunction with the TLS wrapper.

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

sudo apt-get -y install courier-pop

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

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

sudo apt -y install courier-pop

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

sudo aptitude install courier-pop

Summary

In this tutorial we learn how to fix pop3d command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.