There are a number of servers in Brazil which are totally broken. They
are running with outdated versions of the network tables, which cannot be
updated either for technical reasons (not enough disk space) or because
of an administrative error when configuring the server. The people in
charge do not answer mail. The best advice I can offer is to relocate the
lists to another server if you have the misfortune of being hosted on one
of these servers. Note that there are a number of servers in Brazil which
work just fine :-)
Eric