is gmail strongly penalizing IPv6 senders?

[Marco d'Itri]

On May 31, Lorenzo Colitti <lorenzo at google.com> wrote:

> I've asked internally, and in many cases this appears to be due to server
> operators not properly configuring reverse DNS for their IPv6 addresses. Do
> you know if that is the case here?
This is not the case: rDNS is valid and (at least for my own servers) 
even matches the EHLO name.

-- 
ciao,
Marco