Gmail (thus Nanog) rejecting ipv6 email

Mon Apr 4 15:13:34 UTC 2022

On 2022-04-03 07:18, Owen DeLong via NANOG wrote:
> I’ve not experienced this problem sending emails via IPv6 to gmail 
> destinations from my personal domain.
> 
> (delong.com <http://delong.com>)
> 
> Likely this email will, in fact, get sent to GMAIL via IPv6.
> 
> I do have good SPF and DKIM records and signing and a reasonable DMARC 
> policy set up.
> 
> If ISC doesn’t have that yet, it might be a better alternative than 
> turning off IPv6.
> 
> If that doesn’t solve it, I can reach out to someone at Google who can 
> likely get the right parties involved.
> 
> Owen

I think it has been argued before that having a different email 
acceptance policy over IPv4 vs IPv6 is essentially a layering violation. 
I'm sympathetic to that argument.

More to the point: *you* could do this and there are a number of other 
clueful people who can make this work today. And when Google changes 
their rules (that you'll have to learn about once you hit the next 
wall), then you adjust. And you keep on doing this whack-a-mole game.

Of course there's an argument that say "mom and pop should not run their 
own mailserver, there are professionals for that!" but at the end of the 
day what this really serves is deliberate and pre-mediated 
centralisation, slowly but steadily stamping out small players.

Robert