It would seem to me this would violate some pretty basic principles
of list operating.  Someone who's subscribed against her will is in a
position where she'll be reminded, every time she deletes a message
unread, that she's getting them though she doesn't want them.  If it
were me, I'd either put the list address in a bozo filter or return
every message I got.

> Is there any way to make it impossible for a user to "unsubscribe"
> himself from a given listserv?
>
> Here at Millersville University we frequently use listservs for
> general announcements, and we want to make sure our students stay
> "subscribed" and getting mail.

Why would they not want to?  It seems to me that's the question you
need to address.

                                      -- Russ
                                __|~_
Russell A. Hunt            __|~_)_ __)_|~_    Professor of English
St. Thomas University      )_ __)_|_)__ __)  PHONE: (506) 452-0424
Fredericton, New Brunswick   |  )____) |       FAX: (506) 450-9615
E3B 5G3   CANADA          ___|____|____|____/    [log in to unmask]
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      ~~~~~~~~~~~~ http://www.StThomasU.ca/~hunt/ ~~~~~~~~~~~~