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Date: Thu, 22 Feb 2024 16:49:10 +0000 (GMT)
To: mjec <php@mjec.net>
cc: internals <internals@lists.php.net>
Subject: Re: [PHP-DEV] What's up with emails?
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From: derick@php.net (Derick Rethans)

On Thu, 22 Feb 2024, mjec wrote:

> On Thu, 2024-02-22 at 10:29 -05:00, Alain D D Williams <addw@phcomp.co.uk> wrote:
>> On Thu, Feb 22, 2024 at 09:05:22AM -0500, Derick Rethans wrote:
>>
>>> Gmail is rejecting emails after we moved the servers without telling 
>>> us why, in enough detail to do anything about it.
>>
>> I run other mail lists and have had similar problems with gmail 
>> recently.
>
> Gmail explicitly tightened their requirements for senders this month, 
> so while it's likely the server change is related, it may not be the 
> entire cause.
>
> Specifically, they require:
>
> - valid spf, with specific rules for quarantining email that has @gmail.com From but doesn't pass spf
> - valid dkim
> - dmarc configured if the server sends more than 5k emails to Gmail

We should have all of that though?

>
> They also equivocally indicate a requirement for ARC and a List-Id header.

We have a List-Id header, but I've not even heard of ARC. It is on our 
list to investigate though. Our SMTP logs definitely don't say anything 
about this though.

> This is all at https://support.google.com/a/answer/81126.
>
> I think ARC is a must; without it we'll never get to passing dkim at 
> least, even if we rewrite from so spf passes.

But SPF is now passing? The postmaster tools show this:

Date	DKIM success rate	SPF success rate	DMARC success 
rate
15 Feb 2024	100.0%	100.0%	0.0%
16 Feb 2024	100.0%	100.0%	0.0%
17 Feb 2024	100.0%	100.0%	0.0%
18 Feb 2024	100.0%	100.0%	0.0%
19 Feb 2024	100.0%	100.0%	100.0%
20 Feb 2024	100.0%	100.0%	100.0%

> I'm happy to pitch in to help getting this configured if that's 
> helpful, though I'm also very conscious that too many cooks is often a 
> greater harm than good when it comes to administration. But reach out 
> if you think I can be helpful.

We could definitely use some people that now email delivery.

cheers,
Derick