Zitat von "@lbutlr" <krem...@kreme.com>:
On 11 May 2020, at 04:24, Jaroslaw Rafa <r...@rafa.eu.org> wrote:
Someone told me… that Google is more likely to classify email from
small senders as spam if they are sent via IPv6, and less likely if
they are sent via IPv4.
Short of Google publishing this information, I doubt that anyone
knows this, and suspect this was merely someone’s guess, possibly
informed, but probably just a WAG.
What is probably true is that Google is more likely to mark mail
from servers without a valid rDNS as spam, and perhaps more IPv6
hosts do not do their rDNS correctly?
At least some time ago Google had problems with IPv6 PTR temporary
failures (on their side) translated into SMTP reject (hard fail). This
was only for IPv6, in IPv4 they got it right and you would get a SMTP
try later. But never seen this lately and most of our e-mail targeted
Google accounts are transfered by IPv6.
But as always you are at mercy of their content filter if you use
their services for mail.
Regards
Andi
