Yes, that mailing list is so old, I remember when it wasn't even e-Groups yet!
Yahoo bought out e-Groups a while ago it seems (I hadn't noticed, I haven't recieved a message from it since the e-group days), and before that, e-Groups bought the company that hosted the original list. Or else the company changed their name to e-Groups, because I remember getting a message that changed the e-mail to
XXXXXXX@e-Groups.com, and announced new features and such, which not many people used