gforge-mta-postfix software package provides Dummy upgrade package for FusionForge, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gforge-mta-postfix
gforge-mta-postfix is installed in your system.
Make ensure the gforge-mta-postfix package were installed using the commands given below,
$ sudo dpkg-query -l | grep gforge-mta-postfix *
You will get with gforge-mta-postfix package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Old Libraries |
| Package | gforge-mta-postfix |
| Version | 6.0.3+20151023-1ubuntu1 |
| Description | Dummy upgrade package for FusionForge |
| Sub Section | Oldlibs |