anubis software package provides an SMTP message submission daemon, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install anubis
anubis is installed in your system.
Make ensure the anubis package were installed using the commands given below,
$ sudo dpkg-query -l | grep anubis *
You will get with anubis package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Network |
| Package | anubis |
| Version | 4.1.1+dfsg1-3.1 |
| Description | an SMTP message submission daemon |
| Sub Section | Net |