Launchpad didn't gave be an opportunity to fill in version information, thus here as a comment: mailman 1:2.1.16-2ubuntu0.1 Ubuntu 14.04.4 LTS
Launchpad didn't gave be an opportunity to fill in version information, thus here as a comment:
mailman 1:2.1.16-2ubuntu0.1
Ubuntu 14.04.4 LTS