I just started noticing these this week and answered enough of them to
justify writing a canned response.  This first version obviously bites
so I'd appreciate being cc'ed on any insights into causes or cures that
others are aware of.  Thanks.
                                            -Kary


(Begin Eudora Double Message ID FAQ)

Your mail was rejected because it had a duplicated "Message-Id:".

10/07/98: An increasing amount of mail directed to Listserv lately has
been rejected as invalid because the header contains a duplicated
"Message-Id:" field.  It appears that most of the mail exhibiting this
specific problem originates from subscribers using recent versions of
of Eudora, the example triggering this FAQ being "Pro Version 4.1.0.67".

Currently I'm not aware of the cause or the workaround, but I've heard
some speculation that this might be due to a bug in Eudora.

                                        -Kary (SJU Listmaster)

(End Eudora Double Message ID FAQ)