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<p>I'm sure Dave Crocker has thoughts about this, but it has come up
elsewhere. There are both positives and negatives about having
such a consolidation. The positive is that it a small club can
establish ground rules for how they will handle various forms of
attacks, including BGP hijacking, DKIM, SPF, and other forms of
validation to identify fraudulent mail, etc. Also, if you have a
whole lot of postfixes and sendmails running around, that's a
whole lot of code to patch when things go wrong. A small number
of MSPs can devote a lot of time and paid eyes on code. They can
also very quickly spot new attack trends.<br>
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<p>On the other hand, that means that it becomes difficult to become
a new entrant, because one doesn't easily get one's mail
accepted. Lots of grey/blacklisting (forgive the use of the
term). Also, when one of those systems fails, it takes down a
vast number of customers. Furthermore, it represents a <b>massive</b>
concentration of private information that can be monetized.</p>
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<p>Eliot<br>
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<div class="moz-cite-prefix">On 08.09.20 00:27, Mike Hammett via
NANOG wrote:<br>
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<blockquote type="cite"
cite="mid:832234260.13250.1599517645562.JavaMail.mhammett@Thunderfuck2">
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<div><span style="font-size: 13.3333px;">I originally asked on
mailops, but here is a much wider net and I suspect there's
a lot of overlap in interest.</span></div>
<span style="font-size: 13.3333px;">
<div><span style="font-size: 13.3333px;"><br>
</span></div>
<div><span style="font-size: 13.3333px;"><br>
</span></div>
I had read an article one time, somewhere about the ongoing
consolidation of e-mail into a handful of providers was bad
for the Internet as a whole. It was some time ago and thus,
the details have escaped me, so I was looking to refresh my
recollection.</span>
<div style="font-size: 13.3333px;"><br>
</div>
<div style="font-size: 13.3333px;">Have any of you read a
similar article before? If so, can you link me to it?</div>
<br>
<div><span name="x"></span><br>
<br>
-----<br>
Mike Hammett<br>
Intelligent Computing Solutions<br>
<a class="moz-txt-link-freetext" href="http://www.ics-il.com">http://www.ics-il.com</a><br>
<br>
Midwest-IX<br>
<a class="moz-txt-link-freetext" href="http://www.midwest-ix.com">http://www.midwest-ix.com</a><span name="x"></span><br>
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