Hi all,
today, all gmail users were unsubscribed from the mailing list, because we have users who sends e-mails from domains with the DMARC policy reject (like cirrus.com). The mailman counts those bounces and unsubscribe users who do not receive those e-mails. The nice explanation is here:
https://www.linuxchix.org/content/mailing-list-changes
I can enable the "Replace the From: header address" in the mailman config to "Munge From" like in the above example, but it will mean that From: will be altered (see the explanation).
Another option is to disable the bounce check in mailman, but it will cause that the "dead" subscribers are not detected anymore.
Any opinions on this?
Jaroslav
SMTP error:
(host alt1.gmail-smtp-in.l.google.com[173.194.73.26] 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. m14si10079981ljg.84 - gsmtp (in reply to end of DATA command))
DMARC settings for cirrus.com:
v=DMARC1; p=reject; fo=1;rua=mailto:dmarc_rua@emaildefense.proofpoint.com;ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com