postfix-cdb software package provides CDB map support 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 postfix-cdb
postfix-cdb is installed in your system.
Make ensure the postfix-cdb package were installed using the commands given below,
$ sudo dpkg-query -l | grep postfix-cdb *
You will get with postfix-cdb package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | |
| Package | postfix-cdb |
| Version | 2.11.0-1 |
| Description | CDB map support for Postfix |
| Sub Section |