On 12/5/20 10:29 AM, John Levine wrote:
In article <CABa8R6spYyZDhzEnQ=txdoloo1ek1maryw6ioasur1_mevd...@mail.gmail.com>
you write:
mailing list to mailing list mail is very common in GSuite, but maybe we're
a special case.
I dunno how special that case is, but there are lots of cases where mail passes
through multiple layers of ARC signing mutations.
I routinely get mail from Microsoft's farm with an ARC seal or two
that has never been near a mailing list. Any time a MS user sends a
message to one of my lists, it'll emerge with at least two ARC
signatures.
Getting multiple signatures from the originating domain doesn't hurt
anything. It's a little wasteful, but that's it.
Mike
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