milter-greylist software package provides Greylist milter for sendmail, 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 milter-greylist
milter-greylist is installed in your system.
Make ensure the milter-greylist package were installed using the commands given below,
$ sudo dpkg-query -l | grep milter-greylist *
You will get with milter-greylist package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | |
| Package | milter-greylist |
| Version | 4.3.9-1 |
| Description | Greylist milter for sendmail |
| Sub Section |