Re: [exim] wanna turn off ipv6 when sending to gmail

On 2015-08-27 at 09:09 +0100, Mike Cardwell wrote:
> I haven't seen issues either, but then I also use DKIM and SPF. The big
> one for GMail is making sure you have FCRDNS set up. That is an absolute
> requirement of delivering mail to a Google mailserver over IPv6.

I considered that but decided to cut the text mentioning it, because
it's been such a strong requirement for reliable delivery for so long.
All Gmail has (apparently) done is implement the checks at a big
provider, as a hard requirement instead of a strong scoring requirement.

I strongly suspect that Randy has matching forward/reverse DNS, based
simply on who he is and the DNS RFCs which he's written.

-Phil