Re: Gmail (thus Nanog) rejecting ipv6 email

On Tue, 5 Apr 2022, Owen DeLong via NANOG wrote: 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

Re: Gmail (thus Nanog) rejecting ipv6 email

> On Apr 4, 2022, at 08:13 , Robert Kisteleki wrote: > > > 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 ) >> Likely this email will, in fact,

Re: [nanog] opendkim (was: Re: Gmail (thus Nanog) rejecting ipv6 email)

On Mon, 4 Apr 2022, Bjørn Mork wrote: "John Levine" writes: It appears that Michael Thomas said: On 4/3/22 12:12 PM, Bjørn Mork wrote: On a slightly related subject... This DKIM failure surprised me, but at least I verified that many NANOG subscribers have mailservers returning DMARC

Re: Gmail (thus Nanog) rejecting ipv6 email

> On Apr 4, 2022, at 9:39 AM, Andy Smith wrote: > > On Sun, Apr 03, 2022 at 07:44:59PM -0500, Andy Ringsmuth wrote: >> I’m running into this with clients for whom we do web site work. >> Mail not being delivered to Gmail accounts. No bounceback, not >> being delayed, not marked as spam, just

Re: Gmail (thus Nanog) rejecting ipv6 email

Accepting mail for delivery, and then either silently dropping it, delaying it for days, or putting mail that in no way resembles spam into a spam folder seems a little worse than “doing what the standards say”. If you’re going to decide, on little or no evidence, that a message is spam or

Re: Gmail (thus Nanog) rejecting ipv6 email

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 ) Likely this email will, in fact, get sent to GMAIL via IPv6. I do have good SPF and DKIM records and

Re: Gmail (thus Nanog) rejecting ipv6 email

Hello, On Sun, Apr 03, 2022 at 07:44:59PM -0500, Andy Ringsmuth wrote: > I’m running into this with clients for whom we do web site work. > Mail not being delivered to Gmail accounts. No bounceback, not > being delayed, not marked as spam, just black-holed for no > discernible reason. Like,

opendkim (was: Re: Gmail (thus Nanog) rejecting ipv6 email)

"John Levine" writes: > It appears that Michael Thomas said: >> >>On 4/3/22 12:12 PM, Bjørn Mork wrote: >>> On a slightly related subject... This DKIM failure surprised me, but at >>> least I verified that many NANOG subscribers have mailservers returning >>> DMARC failure reports ;-) >> >>Oh

Re: Gmail (thus Nanog) rejecting ipv6 email

> On Apr 3, 2022, at 1:40 PM, na...@shankland.org wrote: > >> It appears that Bjørn Mork said: >>> Google has been trying to move away from Internet email for many years >>> now. Just let them. There is no way you can "fix" that problem on your >>> side. >> >> Don't be silly. Gmail has

Re: Gmail (thus Nanog) rejecting ipv6 email

SuRPTLNnRsoLAQg2kqmQkvylagdeezZc >>> 4p+jQEQv5La2KbjzEIvW6iSGwwe4ltT9hu7h0H8U= >>> Received: (nullmailer pid 389787 invoked by uid 1000); >>> Sun, 03 Apr 2022 18:16:48 - >>> From: =?utf-8?Q?Bj=C3=B8rn_Mork?= >>> To: Randy Bush >>&g

Re: Gmail (thus Nanog) rejecting ipv6 email

+dqo0cSuRPTLNnRsoLAQg2kqmQkvylagdeezZc 4p+jQEQv5La2KbjzEIvW6iSGwwe4ltT9hu7h0H8U= Received: (nullmailer pid 389787 invoked by uid 1000); Sun, 03 Apr 2022 18:16:48 - From: =?utf-8?Q?Bj=C3=B8rn_Mork?= To: Randy Bush Cc: John Levine , "North American Network Operators' Group" Subject: Re: Gmail (

Re: Gmail (thus Nanog) rejecting ipv6 email

gdeezZc > 4p+jQEQv5La2KbjzEIvW6iSGwwe4ltT9hu7h0H8U= > Received: (nullmailer pid 389787 invoked by uid 1000); > Sun, 03 Apr 2022 18:16:48 - > From: =?utf-8?Q?Bj=C3=B8rn_Mork?= > To: Randy Bush > Cc: John Levine , > "North American Network Operators' Grou

Re: Gmail (thus Nanog) rejecting ipv6 email

On Apr 3, 2022, at 9:41 AM, John Levine wrote: > > It appears that Bjørn Mork said: >> Google has been trying to move away from Internet email for many years >> now. Just let them. There is no way you can "fix" that problem on your >> side. > > Don't be silly. Gmail has over a billion users

Re: Gmail (thus Nanog) rejecting ipv6 email

Randy Bush writes: > i try to keep a list of goog's ipv6 email space and don't deliver to it; > rather using ipv4 instead. unfortunately, goog does not cooperate with > dnswl.org, so this can not be automated. How about using their SPF records as automation input? Their MXes are inside those

Re: Gmail (thus Nanog) rejecting ipv6 email

i try to keep a list of goog's ipv6 email space and don't deliver to it; rather using ipv4 instead. unfortunately, goog does not cooperate with dnswl.org, so this can not be automated. this is mildly damaging to the ipv6 religion, but i don't let that spoil my coffee. their lack of cooperation

Re: Gmail (thus Nanog) rejecting ipv6 email

It appears that Bjørn Mork said: >Google has been trying to move away from Internet email for many years >now. Just let them. There is no way you can "fix" that problem on your >side. Don't be silly. Gmail has over a billion users and hosts mail for vast numbers of businesses large and small.

Re: Gmail (thus Nanog) rejecting ipv6 email

I didn't know anyone still cared? Google has been trying to move away from Internet email for many years now. Just let them. There is no way you can "fix" that problem on your side. If you care about specific recipients, then inform them that Google randomly throws away some of their

Re: Gmail (thus Nanog) rejecting ipv6 email

I’ve not experienced this problem sending emails via IPv6 to gmail destinations from my personal domain. (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

Re: [nanog] Re: Gmail (thus Nanog) rejecting ipv6 email

On Sat, 2 Apr 2022, Michael Thomas wrote: On 4/2/22 6:21 PM, John Levine wrote: It appears that Michael Thomas said: I'll be eager to see the papers substantiating this. Until then I remain completely skeptical. It's an experimental RFC for a reason. Let's see the data. ARC is not

Re: Gmail (thus Nanog) rejecting ipv6 email

On 4/2/22 8:01 PM, John Levine wrote: It appears that Michael Thomas said: ARC lets the recipient system look back and do what we might call retroactive filtering, using info about messages as they arrived at the previous forwarder. While it would be nice if lists did a better job of spam

Re: Gmail (thus Nanog) rejecting ipv6 email

It appears that Michael Thomas said: >> ARC lets the recipient system look back and do what we might call >> retroactive filtering, using info about messages as they arrived at >> the previous forwarder. While it would be nice if lists did a better >> job of spam filtering, they don't, and ARC is

Re: Gmail (thus Nanog) rejecting ipv6 email

On 4/2/22 6:21 PM, John Levine wrote: It appears that Michael Thomas said: Google at least adds ARC headers in Gmail, and did the editing of RFC8617. ARC resolves into a previously unsolved problem: reputation. ... No, actually it doesn't, as has been repeatedly explained. ARC addreses

Re: Gmail (thus Nanog) rejecting ipv6 email

On 4/2/22 6:16 PM, John Levine wrote: It appears that Michael Thomas said: There are a lot of bits and bobs that one has to get right for mail to flow, amongst which: - IP -> PTR lookup -> that hostname lookup, and match to IP again - SPF - DKIM - DMARC Yup. Gmail has made it

Re: Gmail (thus Nanog) rejecting ipv6 email from poorly configured senders

It appears that Niels Bakker said: >I also run my own mail server. I had to firewall off Google's MXes for >this exact reason: silent and not-so-silent email rejection when >offered over IPv6. I run my own mail server and have no trouble at all delivering mail to Gmail over IPv6. I do have

Re: Gmail (thus Nanog) rejecting ipv6 email

It appears that Michael Thomas said: >> Google at least adds ARC headers in Gmail, and did the editing of RFC8617. > >ARC resolves into a previously unsolved problem: reputation. ... No, actually it doesn't, as has been repeatedly explained. ARC addreses the problem that mailing lists do a

Re: Gmail (thus Nanog) rejecting ipv6 email

It appears that Michael Thomas said: >> There are a lot of bits and bobs that one has to get right for mail to flow, >> amongst which: >> >> - IP -> PTR lookup -> that hostname lookup, and match to IP again >> - SPF >> - DKIM >> - DMARC Yup. Gmail has made it quite clear that they will

Re: [nanog] Re: Gmail (thus Nanog) rejecting ipv6 email

On Sun, 3 Apr 2022, Jeroen Massar wrote: Hi Dan, Hope the rest of the world is treating you decently! There are a lot of bits and bobs that one has to get right for mail to flow, amongst which: - IP -> PTR lookup -> that hostname lookup, and match to IP again

Re: [nanog] Re: Gmail (thus Nanog) rejecting ipv6 email

On Sun, 3 Apr 2022, Niels Bakker wrote: I also run my own mail server. I had to firewall off Google's MXes for this exact reason: silent and not-so-silent email rejection when offered over IPv6. Every now and then they rotate their IP addresses, which causes mail to get dropped for a while.

Re: Gmail (thus Nanog) rejecting ipv6 email

On 4/2/22 4:05 PM, John Curran wrote: On 2 Apr 2022, at 6:23 PM, Jeroen Massar via NANOG wrote: There are a lot of bits and bobs that one has to get right for mail to flow, amongst which: - IP -> PTR lookup -> that hostname lookup, and match to IP again   

Re: Gmail (thus Nanog) rejecting ipv6 email

On 4/2/22 3:56 PM, Jeroen Massar wrote: On 3 Apr 2022, at 00:29, Michael Thomas wrote: On 4/2/22 3:23 PM, Jeroen Massar via NANOG wrote: Hi Dan, Hope the rest of the world is treating you decently! There are a lot of bits and bobs that one has to get right for mail to flow, amongst

Re: Gmail (thus Nanog) rejecting ipv6 email

On 2 Apr 2022, at 6:23 PM, Jeroen Massar via NANOG wrote: > There are a lot of bits and bobs that one has to get right for mail to flow, > amongst which: > > - IP -> PTR lookup -> that hostname lookup, and match to IP again > (https://en.wikipedia.org/wiki/Forward-confirmed_reverse_DNS) > -

Re: Gmail (thus Nanog) rejecting ipv6 email

> On 3 Apr 2022, at 00:29, Michael Thomas wrote: > > > On 4/2/22 3:23 PM, Jeroen Massar via NANOG wrote: >> Hi Dan, >> >> Hope the rest of the world is treating you decently! >> >> There are a lot of bits and bobs that one has to get right for mail to flow, >> amongst which: >> >> - IP

Re: Gmail (thus Nanog) rejecting ipv6 email

On 4/2/22 3:23 PM, Jeroen Massar via NANOG wrote: Hi Dan, Hope the rest of the world is treating you decently! There are a lot of bits and bobs that one has to get right for mail to flow, amongst which: - IP -> PTR lookup -> that hostname lookup, and match to IP again

Re: Gmail (thus Nanog) rejecting ipv6 email

* d...@prime.gushi.org (Dan Mahoney (Gushi)) [Sun 03 Apr 2022, 00:11 CEST]: I've been seeing a long thread about why ipv6 adoption isn't there yet. This is half a "paging someone with clue" post and half a "...really, guys?" Picard-facepalm post. I just (earlier this week) had to disable

Re: Gmail (thus Nanog) rejecting ipv6 email

Hi Dan, Hope the rest of the world is treating you decently! There are a lot of bits and bobs that one has to get right for mail to flow, amongst which: - IP -> PTR lookup -> that hostname lookup, and match to IP again (https://en.wikipedia.org/wiki/Forward-confirmed_reverse_DNS) - SPF -