Strange thing... I'm running a NT Network with Exchange.  I installed
listerv on a separate server than the exchange.  I'm running lsmtp on my
listserv server.  My listserv server is able to receive mail and send mail
to users within the exchange global address list, but not outside it.  I'm
getting relay prohibited in the listserv logs when trying to send to
addresses like hotmail.com.  Any ideas?