23 May
2019
23 May
'19
5:42 p.m.
On Thu, May 23, 2019 at 14:18 Gert Doering via Outages <outages@outages.org> wrote:
On Thu, May 23, 2019 at 07:31:28AM -0400, Jared Mauch via Outages wrote:
Anyone else having this problem? Their system is periodically rejecting mails and reporting it as invalid IPv6 PTR but there have been no changes in my systems, and the help pages at google do not actually provide any additional guidance.
Google is fully intent on making people use IPv4 for SMTP delivery to their MXes.
Lots of silly requirements that are not there on IPv4 (like, must have strong PTRs, SPF, DKIM, ...) - so, BCP today is "just deliver to Google over IPv4".
Or phrased differently “when you turn off IPv6, it works better”. :-( Kind regards, Job