I propose there are only two mailing lists: the general discussion one and the announcements, which is only AL => subscribers. This one could even be an internal one, like a list of addresses, and not a real mailing list. This means it's mandatory. It should include all mirror admins, whose addresses are put in when the mirror is registered. It may also send to the general discussion and whoever else the boss wants. Of course all lists should publish the contact address of AL, as has already been said and seems to be a consensus. Concerning mirror outages and other problems, I think important mirrors should warn the community if the problems last more than about 4h-6h not only because of the impact on users but also on downstream mirrors.