[MlMt] From "XXX via mailmate"

[MM_Arc]

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 at lists.freron.com>
	Reply-To: MailMate Users <mailmate at lists.freron.com>
	Cc: MM_Arc <mailmate at arcict.com>
	Sender: "mailmate" <mailmate-bounces at 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
> _______________________________________________
> mailmate mailing list
> mailmate at lists.freron.com
> https://lists.freron.com/listinfo/mailmate
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