I am making a site that aims to be a repository of information about Serial Experiments Lain and it's fanbase, and in research I have come across one yahoo group that was used often by the SEL fanbase:
http://groups.yahoo.com/group/serial-experiments-lain

But because Yahoo Groups is gone and the posts on this group could only be accessed by members (meaning that you could only view them via email), I can't find any posts made to this mailing list, not even with the wayback machine.

Is there any way to access the posts? Did anyone archive them? Or are they gone forever?