Form letter I gonna send to all $list-owner as per point 1 above.

---------start

Title: Hosted Mailing Lists clean up

hi,

we are currently mailing you cause your mailing list
hosted on the FedoraHosted infrastructure is inactive
since several months or simply does not have any
message yet. (list name is $list)

We are going to close the list if you won't answer
back this e-mail within 14 days asking us to not
move forward with this action. (archives, if any,
will be backup)

Please remember that closed-lists can be re-opened
anytime you may want it in the future.

If you have any questions, please just follow up to this
e-mail and I'll see what I can do to help you out.

cheers,

Andrea,
on behalf of the Fedora Infrastructure Team

------------end

Clean-up is complete.

As a reference, have a look at:

http://lists.fedoraproject.org/pipermail/infrastructure/2011-March/009981.html

Andrea