On 8/27/21 11:26 AM, Matthew Miller wrote:
On Fri, Aug 27, 2021 at 11:13:28AM -0700, Emmett Culley wrote:
> I don't think DKIM will be a problam as long as the list server doesn't
> alter certain headers, which yu are saying it does. But DKIM failing alone
> would not cause the DMARK to fail, as both SPF and DKIM have to fail.
It alters the message body. Not sure about the relevant headers offhand.
> So this is an SPF issue as far as I can tell.
Yes; that's a problem with mailing lists in general and strict SPF. We could
change it so messages claim to be coming from the list rather than from you,
but that breaks key assumptions about how mailing lists work.
What strikes me is this is the only list that causes this. I suppose it is likely that
there are simply three email servers receiving email from this list that has openDMARC set
up to send failure message to those servers that request them. Like my email DNS is set up
to do. Usually those messages are sent out only once a day, but these I am getting within
seconds of posting a message to this list.
I am aware of the list server issues around SPF, yet some seem to have resolved it. Or at
least it seems that way.
Since this issue is not effecting my access to the list, I will filter those messages to
trash and mark then read.
Emmett