SMTP over IPv6 : gmail classifying nearly all IPv6 mail as spam since 20140818

Marco d'Itri md at Linux.IT
Fri Aug 22 12:14:27 CEST 2014

On Aug 22, Matija Grabnar <matija at> wrote:

> So, much as I would LIKE to have reverse IPv6 DNS on my mail servers, in
> some cases it is just not possible.
Tough luck for you then.
This train has long passed: v4 or v6, if you have no rDNS do not expect 
to have acceptable deliverability.

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