$ sudo apt-get update
$ sudo apt-get install courier-authlib-pipe 

courier-authlib-pipe is installed in your system.

Make ensure the courier-authlib-pipe package were installed using the commands given below,

$ sudo dpkg-query -l | grep courier-authlib-pipe *

You will get with courier-authlib-pipe package name, version, architecture and description in a table

courier-authlib-pipe package basic information: