Improved bounce processing for non-list members who are regularly included in list messages
The ability to set the SENDER header from the admin GUI has been implemented
Changed the member options login page unsubscribe request to allow the requesters IP address in the confirmation.
The Dutch, Finnish, and Japanese translations have been updated
The buttons for Cancel and Subscribe have been reordered on the subscription confirmation page so that the default action when pressing “Enter” will be the Subscribe button (if the browser defaults to picking the first button)
The official Release Notes for Mailman 2.1.14 are available here - https://launchpad.net/mailman/2.1/2.1.14
To upgrade the Mailman application to the latest version, log in to the Control Panel for the Virtual Machine, and go to System > Applications > Mailman > Updates Available -> Update application