Am 18.06.2017 um 19:23 schrieb G.W. Haywood:
Hi there,
On Sun, 18 Jun 2017, Paul Kosinski wrote:
On Fri, 16 Jun 2017 17:22:53 +0100 (BST) "G.W. Haywood" wrote:
... We just outright reject all mail from the '.edu' TLD ...
Why do you reject *all* email from ".edu".
Because all connections we see from .edu are either from compromised
accounts sending spam or from irresponsible juveniles who think it's
clever/cool/whatever to try to hack into other people's computers
don't get me wrong that is laughable - just because you don't see false
positives you are triggering with such a misguided policy don't mean you
are not rejecting legit mail
it's probably fine if it's a mailserver just for your personal use but a
no-go if you are responsible for other peoples email at least when it's
not backed with DNSWL and/or SPF and messages making it trhough that
checks are handeled by a proper content based filter
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