On 2/17/20 9:46 AM, Jaroslav Kysela wrote:
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
The way I understand it option 2 would also mean that nobody at a
service provider that implements DMARC checks on the receiver side would
receive mail sent to the list by people using a service provider that
has a reject policy for outgoing mails. E.g. in your example while gmail
users would not be unsubscribed from the mailing-list, but they still
wouldn't receive the mails sent from cirrus.com. Which kind of makes the
mailinglist useless.
The way I understand the option to replace the From: header is that it
will only happen for those that have a reject policy, for everybody else
nothing changes. So if the mailinglist is supposed to stay useful for
those with a reject policy the only option is to rewrite the from header
for them.
- Lars
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