Gmail MX over IPv6

Eric Vyncke (evyncke) evyncke at
Sat Jun 16 20:21:32 CEST 2012

Indeed, gmail cannot send to IPv6 MX... Just tested with dual-stack and IPv6-only email recipients


> -----Original Message-----
> From: at [mailto:ipv6-ops-
> at] On Behalf Of Phil Pennock
> Sent: samedi 16 juin 2012 03:40
> To: Luca BRUNO
> Cc: ipv6-ops at
> Subject: Re: Gmail MX over IPv6
> On 2012-06-15 at 23:30 +0200, Luca BRUNO wrote:
> > I'm not sure if it is a recent change or if I have just been
> > white-listed, but today in mailserver logs I've spotted that
> > is already accepting mail over an IPv6 MX:
> Recent, started with this year's IPv6 day.  I've been whitelisted for a
> couple of years, but I noticed it on June 6:
> > I haven't yet seen any mail coming from over IPv6, though.
> Me neither, but they do seem to have been giving some recent attention to
> their SMTP gateways; they also recently picked up support for TLS1.2
> inbound-to-Gmail.  Not yet outbound.
> -Phil

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