The old speedycgi mailing list has been replaced with the lists below.
SpeedyCGI users mailing list - speedycgi-users@lists.sourceforge.net. Archives and subscription information are at http://lists.sourceforge.net/lists/listinfo/speedycgi-users
SpeedyCGI announcements mailing list - speedycgi-announce@lists.sourceforge.net. Archives and subscription information are at http://lists.sourceforge.net/lists/listinfo/speedycgi-announce
Archives of the old list can still be found here.