Mailman Backup

Not sure whether this is the correct area to post this but here goes.

I have looked into setting up a discussion list through the DH panel which uses the mailman application. I can setup the mailing list ok and it all works but I cannot see anywhere to backup the data. I understand that the way mailman works is that it stores and uses data outside of my home directory. Does anyone know if there is any way to backup this data.

Also if it is not possible to backup can anyone suggest something that I can install and use on my DH hosting that will enable a discussion list with the ability to backup?