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Date: Sat, 10 Oct 2009 12:31:01 -0500
From: Kevin Kinsey <kdk@daleco.biz>
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Subject: Tcpwrappers, sendmail, and unknown hosts...
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Seems like a lot of the spam we fight comes from
hosts with no DNS entries.  What about using this?

----------------------------------

$grep sendmail /etc/hosts.allow

sendmail : KNOWN : allow
sendmail : UNKNOWN : deny

---------------------------------

Comments?  anyone tried it?

Kevin Kinsey
DaleCo, S.P.