LISTSERV wants you to forward the message using the 'Resent-' mechanism,
which the Internet un*x people designed and documented for the purpose of
then not using it when they wrote mail programs. The original header is
kept as is, and the user interface adds a set of 'Resent-' tags for the
new message. You can't get VMSmail to do that because it knows nothing
about RFC822. Maybe ELM has some switch that will make it do that.
Eric