On Wed, 17 Jan 2001 18:53:01 PST, Danny Lee <[log in to unmask]>  said:
> The list is confidential; it is also has a fairly dynamic membership; users

Danger, Will Robinson, Danger!!

Any security person will tell you that "confidential" and "dynamic" intermixed
are a problem waiting to happen.  If *this* week's list of recipients of
sensitive info isn't the same as *last* weeks, something will leak.  Guaranteed.

> can request to subscribe, but subscriptions require list owner approval. The

Reasonable enough.

> owner wants to be sure everyone who receives a message knows who else has
> received it, and they can't tell if they just receive standard LISTSERV
> headers...

Please point out to the owner that:

"the list of people that Listserv originally sent it to",

"the list of recipients that *received* the note without it bouncing",

"the list of recipients that *read* the note once it was delivered",

"the list of people who actually *SAW* the note *AFTER* forwarding, resending, and all
the rest of that stuff"

are all very different.

Make *very* sure the list owner understands *which* of these values the
owner is *really* concerned about, and what Listserv can and can't do
about it.,

                                Valdis Kletnieks
                                Operating Systems Analyst
                                Virginia Tech