queuegraph software package provides a RRDtool frontend for Postfix queue-statistics, 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 queuegraph
queuegraph is installed in your system.
Make ensure the queuegraph package were installed using the commands given below,
$ sudo dpkg-query -l | grep queuegraph *
You will get with queuegraph package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Administration Utilities |
| Package | queuegraph |
| Version | 1.1.1-3 |
| Description | a RRDtool frontend for Postfix queue-statistics |
| Sub Section | Admin |