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

[Darren Pilgrim]

On 8/22/2014 2:46 AM, Matija Grabnar wrote:
> So, much as I would LIKE to have reverse IPv6 DNS on my mail servers, in
> some cases it is just not possible.

Can you describe those cases?  I can't think of any scenarios where 
you'd run a correctly-configured public MX and not have reverse DNS.