On 10. 05. 23 17:34, Konstantin Ryabitsev wrote:
So, I'm just going to repeat this: operating a mailing list and remaining
DMARC compliant is perfectly possible, provided:
- the original message is DKIM-signed
- all existing headers are unmodified
- the message body is unmodified
Example of e-mail which is rejected by google's mx servers:
https://lore.kernel.org/alsa-devel/20230510142227.32945-1-vitalyr@xxxxxxxxxxxxxxxxxxxxx/raw
From the postfix e-mail queue:
https://gist.github.com/perexg/ac06eacd8b3a8f741ef5602ec748e0a8
SMTP error:
reason=host alt1.aspmx.l.google.com[142.251.9.27] said: 550-5.7.26
Unauthenticated email from cirrus.com is not accepted due to domain's
550-5.7.26 DMARC policy. Please contact the administrator of cirrus.com domain
550-5.7.26 if this was a legitimate mail. Please visit 550-5.7.26
https://support.google.com/mail/answer/2451690 to learn about the 450 4.7.26
DMARC initiative. mz11-20020a1709071b8b00b009665976cbddsi3525670ejc.170 -
gsmtp (in reply to end of DATA command)
Jaroslav
--
Jaroslav Kysela <perex@xxxxxxxx>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
