libdkim-dev software package provides cryptographically identify the sender of email, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libdkim-dev
libdkim-dev is installed in your system.
Make ensure the libdkim-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libdkim-dev *
You will get with libdkim-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Library development |
| Package | libdkim-dev |
| Version | 1:1.0.21-3 |
| Description | cryptographically identify the sender of email |
| Sub Section | Libdevel |