Apparently they come from BigPond in Australia. The NNTP posting host
addresses are all 144.138.3.102, which is assigned to Telstra in Australia.
The range 144.138.0.0 is not actually listed as being owned by BigPond in a
dig of BigPond's records, so this might be faked.
Might be the same idiot who was bitching at Microsoft a while ago because
his messages were incomplete.