Re: {OT] Mailing lists etc for postmasters
On Fri 01/03/2024 at 11:16, Andy Smith <andy@strugglers.net> wrote:
> Hi,
>
> On Fri, Mar 01, 2024 at 11:00:13AM +0000, Gareth Evans wrote:
>> "Don’t impersonate Gmail From: headers. Gmail will begin using a DMARC quarantine enforcement policy, and impersonating Gmail From: headers might impact your email delivery."
>
> Talks about gmail's own use of DMARC, not the sender's.
That makes perfect sense :)
>> Can a "DMARC quarantine enforcement policy" operate, if the sender
>> doesn't use DMARC? This idea seems to relate more to SPF than
>> anything?
>
> gmail's own policy is quarantine so if you send from somewhere that
> isn't gmail, while pretending to be from a gmail property, gmail
> indicates that it wishes¹ for your email to be quarantined by the
> recipient.
So does that.
> Thanks,.
> Andy
>
> ¹ Even receiving sites that process DMARC sometimes don't carry out
> the DMARC author's wishes. As a common example that most of us
> will have seen, Mailman mailing lists will often just selectively
> rewrite the headers.
Yes.
Thanks very much.
G
>
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