exim4 software package provides metapackage to ease Exim MTA (v4) installation, 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 exim4
exim4 is installed in your system.
Make ensure the exim4 package were installed using the commands given below,
$ sudo dpkg-query -l | grep exim4 *
You will get with exim4 package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | |
| Package | exim4 |
| Version | 4.87-3ubuntu1 |
| Description | metapackage to ease Exim MTA (v4) installation |
| Sub Section |