Re: FWD: [ATTENTION] Mails on qemu mailing list are disapapearing making communication unreliable

["Daniel P. Berrangé" <berrange@redhat.com>]

On Wed, Dec 10, 2025 at 05:58:40PM +0000, Salil Mehta wrote:
> Hi Daniel,
> 
> Many thanks for your reply.
> 
> On Wed, Dec 10, 2025 at 4:54 PM Daniel P. Berrangé <berrange@redhat.com> wrote:
> >
> > On Wed, Dec 10, 2025 at 01:20:26AM +0000, Salil Mehta wrote:
> > > If there are SPF/DKIM/DMARC logs on the list side, would it be
> > > possible to see whether DKIM validation is failing for my messages?
> >
> > We have no access to anything in the mailman service - we're just
> > using the nongnu.org service for QEMU, run by the GNU project.
> 
> Understood, thanks for clarifying.
> 
> If you happen to know who maintains the nongnu.org Mailman service,
> or where I should direct questions about mail logs and DMARC handling,
> a pointer would be very helpful.

I'm afraid I don't know any contact there, but someone else on
CC might.


> I am following up with our IT/mail team about DKIM and the correct
> SMTP relay configuration for mailing lists. If it is easy to see
> from the list side whether my recent missing patch mails were
> rejected or filtered due to SPF/DMARC (as opposed to never
> arriving at all), that information would be very helpful for that
> discussion.

FWIW, when I first investigated DMARC/DKIM/SPF in the context of
mailing lists years ago, the following blog was a good explainer
to refer people to:

  https://begriffs.com/posts/2018-09-18-dmarc-mailing-list.html

TL;DR: if DMARC is used by a sender's domain, then the best
situation is for the sender domain to have DMARC + DKIM enabled,
AND for mailing lists to NOT modify the message text, nor any of
the headers covered by DKIM.

We believe qemu-devel does the latter part correctly, as we
turned off modification of the Subject header, and stopped
appending a footer to the message text.

Unfortunately I don't know any way to trace the cause of your
problems without info from the mail system logs on the mailing
list server, which only the sysadmins have access to :-(

With regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|