Date: Thu, 24 Jul 1997 18:49:00 +0200 From: sthaug@nethelp.no To: Anthony.Kimball@East.Sun.COM Cc: current@FreeBSD.ORG Subject: Re: (over)zealous mail bouncing Message-ID: <3014.869762940@verdi.nethelp.no> In-Reply-To: Your message of "Thu, 24 Jul 1997 11:01:48 -0500 (CDT)" References: <199707241601.LAA03086@compound.east.sun.com>
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> : To sum it up: The problem of spammers using bogus names to hide behind > : is a far, far greater problem than not being able to send mail to > : those comparatively few individuals without valid hostnames, so using > : the "99.9% vs .1%" value rule, you simply lose. :-) > > I beg to differ. Most machines which may validly receive email do *not* > have valid hostnames. Using the majority-minority rule, *you* lose. > That's reality. Nope. Let's reformulate it a little bit: Most machines which may validly receive email through a direct SMTP transaction across the Internet, have valid hostnames. This *includes* dialup users, for which the ISP needs to have the dialup addresses in his DNS (both forward and reverse). This *excludes* users which receive email through some sort of relay - in this that case it's the job of the relay to perform necessary rewriting. Checking for bogus names as a way to exclude spam is only going to get more popular. Better get used to it. Steinar Haug, Nethelp consulting, sthaug@nethelp.no
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