We have our central mail servers specified as MX hosts for our LISTSERV
server. We run MIMEDefang and McAfee uvscan on the central mail servers,
and MD is configured to discard any message which uvscan identifies as a
mass-mail virus carrier message. In the last 2+ weeks, our central mail
servers have discarded nearly 900,000 mass-mail virus carrier messages.

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Paul Russell
Senior Systems Administrator
University of Notre Dame