[outages] Google Mail rejecting IPv6 originated mails

[Gert Doering]

Hi,

On Thu, May 23, 2019 at 08:18:22PM -0600, Keith Medcalf wrote:
> What is a "strong PTR"?

Poor wording on my side.  This should have been "strong PTR requirements",
like "you must have one", "it must match forward" and, I think, "it
should be something that looks like a algorithmically-mapped address".

Which is all good practice anyway, so this annoys me less than the 
*difference* between their v4 and v6 requirements, and that the v6
requirements are not always easy to understand - like, you get an
error about your PTRs, but they are all there and symmetric...

gert
-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
                             Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany                             gert at greenie.muc.de