Re: {OT] Mailing lists etc for postmasters

From	"Gareth Evans" <donotspam@fastmail.fm>
Newsgroups	linux.debian.user
Subject	Re: {OT] Mailing lists etc for postmasters
Date	2024-03-01 12:30 +0100
Message-ID	<Id9fr-dFVV-3@gated-at.bofh.it> (permalink)
References	<Id0c9-dAbW-1@gated-at.bofh.it> <Id7dD-dELf-7@gated-at.bofh.it> <Id8W5-dFPN-7@gated-at.bofh.it> <Id95L-dFSY-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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

>
> -- 
> https://bitfolk.com/ -- No-nonsense VPS hosting

Thread

{OT] Mailing lists etc for postmasters "Gareth Evans" <donotspam@fastmail.fm> - 2024-03-01 02:50 +0100
  Re: {OT] Mailing lists etc for postmasters <tomas@tuxteam.de> - 2024-03-01 06:50 +0100
    Re: {OT] Mailing lists etc for postmasters Michael Grant <mgrant@grant.org> - 2024-03-01 09:30 +0100
      Re: {OT] Mailing lists etc for postmasters tomas@tuxteam.de - 2024-03-01 09:50 +0100
  Re: {OT] Mailing lists etc for postmasters Marco Moock <mm@dorfdsl.de> - 2024-03-01 09:30 +0100
  Re: {OT] Mailing lists etc for postmasters Andy Smith <andy@strugglers.net> - 2024-03-01 10:20 +0100
    Re: {OT] Mailing lists etc for postmasters "Gareth Evans" <donotspam@fastmail.fm> - 2024-03-01 12:10 +0100
      Re: {OT] Mailing lists etc for postmasters Andy Smith <andy@strugglers.net> - 2024-03-01 12:20 +0100
        Re: {OT] Mailing lists etc for postmasters "Gareth Evans" <donotspam@fastmail.fm> - 2024-03-01 12:30 +0100
      Re: {OT] Mailing lists etc for postmasters "Gareth Evans" <donotspam@fastmail.fm> - 2024-03-01 12:20 +0100

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