Date: Wed, 04 Apr 2007 08:13:32 -0500 From: Martin McCormick <martin@dc.cis.okstate.edu> To: freebsd-questions@freebsd.org Subject: Any Way to Plug This Hole in Local Sendmail Delivery? Message-ID: <200704041313.l34DDWuF044355@dc.cis.okstate.edu>
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First of all, I think sendmail is great, so this is a minor issue. The problem is that the spammers can cause local delivery of their junk by using the name of an account on the system. As an example, I just received some junk that a human being can instantly tell is bogus. It's from line is the usual sort of bogus hotmail, or AOL or MSN, forgery but then there is this line which is, I am sure, how it got in. From: Weekly News <martin@dc.cis.okstate.edu> Milter-sender used to catch these constantly, but that filter is no longer available. Is there anything else that is useful, but not too disruptive that can either refuse delivery or send it to spam to die? I already run bogofilter which I trained with about 12,000 or more spam messages and which does a good to excellent job of catching most of this, but messages that claim to be local but aren't should be mechanically testable. Thanks. Martin McCormick WB5AGZ Stillwater, OK Systems Engineer OSU Information Technology Department Network Operations Group
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