I read this list as a digest, so I apologize if this has been mentioned before.
 
Eudora as delivered has a quaint way of forwarding which is incompatible
with what Listserv expects.  This behavior can be modified for Mac Eudora
Pro, at least,  by installing the Forward934 plug in in the Eudora folder
in the System folder.
 
It's available from ftp.qualcomm.com in /quest/mac/eudora/plugins.
 
    Richard Hintz                 mailto:[log in to unmask]
    University of California      http://www.ucop.edu/~hintz