You can't force your customers, but you have to tell them what will happen to their emails.
You can point them to this document: https://www.m3aawg.org/sites/maawg/files/news/M3AAWG_Inbound_IPv6_Policy_Issues-2014-09.pdf and also https://engineering.linkedin.com/email/sending-and-receiving-emails-over-ipv6 On Thu, Apr 14, 2016 at 8:26 AM, Thomas Wilhelm <thomas.wilh...@inexio.net> wrote: > Hi Brandon, > > thank you for your answer. > > Our outgoing IPv6-addresses are: > > 2a01:5c0:63:10[0-8]::1/56 and > 2a01:5c0:63:[1-8]::1/56 > > Our main domains are: inexio.net and myquix.de These domains are under > our control, so we are going to enable DKIM for both and SPF for > inexio.net. SPF is already enabled for myquix.de. > > In addition to our private customers, we have about 1.000 business > customers, who also send mails from their domains using our outgoing > mailserver as a smarthost. > We can't force them to setup SPF or DKIM for their domains. > > I've just enabled maildelivery via IPv6 now for 20% of our mails. > As soon as I have an example for actual deliviery problems I'm going to > send you these source domains. > > Are there any general improvements we can do ? > > best regards, > > Thomas > > ------------------------------ > *Von: *"Brandon Long" <bl...@google.com> > *An: *"Franck Martin" <fmar...@linkedin.com> > *CC: *"Tony Finch" <d...@dotat.at>, "mailop" <mailop@mailop.org>, "Thomas > Wilhelm" <thomas.wilh...@inexio.net> > *Gesendet: *Mittwoch, 13. April 2016 20:56:31 > *Betreff: *Re: [mailop] Gmail Blacklisting > > We don't just run reputation on IP addresses, the spammer killed the > reputation of any associated domains and such. Your domain is recovering, > but it can take up to 30 days to fully recover.... sometimes longer if > people don't mark your mail as not spam. > Though, that's only for the domain you're posting from, without details > not much more I can go on. > > Brandon > > On Wed, Apr 13, 2016 at 10:48 AM, Franck Martin via mailop < > mailop@mailop.org> wrote: > >> And it is not only to Google, many other mail receivers requires SPF or >> DKIM over IPv6. >> And if you set up a mail receiver with IPv6, do these requirements too, >> it is an industry best practice (cf M3AAWG.org). >> >> On Wed, Apr 13, 2016 at 2:59 AM, Tony Finch <d...@dotat.at> wrote: >> >>> Thomas Wilhelm <thomas.wilh...@inexio.net> wrote: >>> > >>> > Does anybody have a hint for us, how to fix this problem? >>> >>> To send mail to Google over v6 you have to have SPF, DKIM, reverse DNS, >>> everything set up to the best anti-spam standards. >>> >>> Tony. >>> -- >>> f.anthony.n.finch <d...@dotat.at> http://dotat.at/ - I xn--zr8h >>> punycode >>> Southeast Iceland: Northeasterly 5 or 6 becoming variable 3 or 4, then >>> cyclonic 5 to 7. Moderate or rough, becoming slight or moderate for a >>> time. >>> Showers. Good. >>> >>> _______________________________________________ >>> mailop mailing list >>> mailop@mailop.org >>> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >>> >> >> >> _______________________________________________ >> mailop mailing list >> mailop@mailop.org >> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >> >> >
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