Dear All,
Thanks for the elaborate answer.
Indeed I din’t think about DMARC, SPF & DKIM and it makes sense
indeed.
This also explains why following a post I get a my mail from the list to
the list, cc me.
For those intrested
From: MM_Arc via mailmate <mailmate@lists.freron.com>
Reply-To: MailMate Users <mailmate@lists.freron.com>
Cc: MM_Arc <mailm...@arcict.com>
Sender: "mailmate" <mailmate-boun...@lists.freron.com>
Many thanks for the info
Regards
Marc
On 20 Dec 2023, at 4:55, Quinn Comendant via mailmate wrote:
On 19 Dec 2023, at 16:06, Bill Cole wrote:
Mailman modifies the "From" header of messages sent from domains
which would otherwise be widely rejected […]
I won't try to pick apart the precise details for this list. Perhaps
Benny can explain the specific rules.
Mailman checks the DMARC policy published to the DNS TXT records of
the domain in the "From" header of the original message. If the policy
is 'p=reject' or 'p=quarantine', Mailman may modify the "From" header
to use the list's email address or the server's hostname to prevent
rejection due to DMARC, SPF, or DKIM checks.
It doesn't treat all senders the same because some people self-host
their email domain and don't use DKIM or SPF.
Quinn
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