On Wed 05/Nov/2025 08:56:34 +0100 Marjorie Roome via Dng wrote:
> On 4 September 2025 10:33:34 BST, Didier Kryn <kryn@???> wrote:
>>
>>    I can see some senders, eg disparage, Alexander Bochmann, tempforever, onefang, Steve Litt, aitor_czr, Hendrik Boom, tito, Marin Ivanov, Thomas Torcz, but most others are dng@??? . Some of the names I can see are in my address-book, but not all, therefore it is not related to the address-book.
>>
>>    But, as from a few days ago, even my own emails now show up as coming from dng@???.
>
> I'm using K9 mail as my mail client on Android.
> About half of the list emails on this topic show the originator's email address, including Didier's, the others show dng@???, so it doesn't seem to be a recipient client setting.
> On K9 I choose to display the email address rather than the name because bad actors often spoof the name.


Rewriting the From: address is required after DMARC.

ale@pcale:~$ dig +short _dmarc.meeble.net txt
"v=DMARC1;p=quarantine;sp=quarantine;adkim=r;aspf=r"

That p=quarantine requires that "From: Marjorie Roome <marjorie@???>" +
DKIM signature by meeble.net failed after the mailing list added a footer ==>
quarantine the message. Hence From: has to be munged.

Best
Ale
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