Changed list server software for ietf-types list

[Harald Alvestrand]

I have changed the list software for the IETF-types list from majordomo 
running on dokka.alvestrand.no to Mailman running on eikenes.alvestrand.no

You should not notice any change until you want to unsubscribe - although 
you will get a note every month telling you how to unsubscribe or change 
your subscription.

The addresses that were previously on the "allowed to post" list are now 
added to the list as "nomail" members - there are 2 ways of achieving this 
functionality in Mailman, and this is one of them. Comments sought.

The main reason for the change is to get an interface that is simpler for 
the list administrator to use when approving non-subscriber postings and 
deleting the (HUGE amounts of) spam sent to the list.

Thank you for your patience.

                        Harald Alvestrand