[mob] List changes

[Robbie Honerkamp <robbie@shorty.com>]

For those who haven't noticed, there have been some
changes to the list recently. It is now running on
new software on a new server.

One important change- only list subscribers may post
to the list. This has kept a lot of spam off of the
list (there was a LOT of junk coming through). This
means that if you try sending something to the list 
from an address that isn't subscribed it will bounce.

If there are other addresses you will be posting to 
the list from, please send them to me and I will add
them to the 'allowed posters' list.

Robbie