Hello:

We're getting lots of spam that appears to come from our LISTSERV
server with faked addresses like this:

  From:  Carrie Potts <[log in to unmask]>

which get posted on a number of semi-public lists (Service=*uvm.edu,
Send=Service)

Will the code below block all but 3 users and is that wise?  I'm concerned
that other addresses I may not know about should be allowed through, like
[log in to unmask] or some such.  Thanks.
LISTSERV(R) for unix version 14.5 & Linux RH 9

John Ryder, Systems Administrator, Computing and Information Technology,
            University of Vermont, [log in to unmask] 802-656-1183

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SPAM_BLACKLIST_FROM="*@list.uvm.edu"
export SPAM_BLACKLIST_FROM

SPAM_WHITELIST_FROM="[log in to unmask] [log in to unmask] [log in to unmask]"
export SPAM_WHITELIST_FROM