nullmailer software package provides simple relay-only mail transport agent, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install nullmailer
nullmailer is installed in your system.
Make ensure the nullmailer package were installed using the commands given below,
$ sudo dpkg-query -l | grep nullmailer *
You will get with nullmailer package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | |
| Package | nullmailer |
| Version | 1:1.11-2.1 |
| Description | simple relay-only mail transport agent |
| Sub Section |