HI
Considering the list owners commentary, it seems reasonable to infer
that no active attempt by list owner to identify the source of these
'aliases' will be made.
Which is exactly the wrong kind of conclusion to reach since there is
more than one list admin and the problem in finding the source has
clearly been stated before in the list several times. If you have any
ideas on "actively" finding the spammer and if you are willing to help
feel free to mail the administrators about it.
regards
Rahul