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Date:      Fri, 6 Apr 2007 02:14:32 +0100
From:      RW <fbsd06@mlists.homeunix.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: Any Way to Plug This Hole in Local Sendmail Delivery?
Message-ID:  <20070406021432.0f4a17b4@gumby.homeunix.com>
In-Reply-To: <70AB9490-12D7-462A-815E-2212F977624E@goldmark.org>
References:  <200704041313.l34DDWuF044355@dc.cis.okstate.edu> <70AB9490-12D7-462A-815E-2212F977624E@goldmark.org>

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On Thu, 5 Apr 2007 13:18:33 -0500
Jeffrey Goldberg <jeffrey@goldmark.org> wrote:

> The second is that the spammer could be forging in the sender
> address (envelope FROM)
> 
>    MAIL FROM:<user@your.domain>
> 
> The third type of forgery is in the header From address.

Bear in mind that both of these are often done legitimately; for
example by people working from home and using their ISP's server to
send an email to a colleague.



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