is gmail strongly penalizing IPv6 senders?

[Pim van Pelt]

2013/5/30 Patrick Tudor <ptudor at ptudor.net>:
> I noticed about two weeks ago peculiar problems with gmail delivery that were immediately resolved by adding SPF records to a domain that had gone two years without them, fwiw.
I believe that reversed DNS may help also, and EHLO/HELO matching that rDNS.

--
Pim van Pelt <pim at ipng.nl>
PBVP1-RIPE - http://www.ipng.nl/