courier-authlib-userdb software package provides userdb support for the Courier authentication library, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install courier-authlib-userdb
courier-authlib-userdb is installed in your system.
Make ensure the courier-authlib-userdb package were installed using the commands given below,
$ sudo dpkg-query -l | grep courier-authlib-userdb *
You will get with courier-authlib-userdb package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | |
| Package | courier-authlib-userdb |
| Version | 0.66.4-7 |
| Description | userdb support for the Courier authentication library |
| Sub Section |