bley software package provides intelligent greylisting daemon for Postfix, 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 bley
bley is installed in your system.
Make ensure the bley package were installed using the commands given below,
$ sudo dpkg-query -l | grep bley *
You will get with bley package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | |
| Package | bley |
| Version | 0.1.5-2 |
| Description | intelligent greylisting daemon for Postfix |
| Sub Section |