Hi Jeremy,

On Tue, 29 Mar 2016 16:56:58 +0800 Jeremy Kerr [off-list ref] wrote:

From the mail that Anton has sent to linuxppc-dev:

quoted

From: Anton Blanchard via Linuxppc-dev <redacted>
Reply-To: Anton Blanchard [off-list ref]  

Do you know why mailman would be re-writing From: there? It's confusing
patchwork, as multiple mails are now coming from that address.

Yep, Anton posts from samba.org.  They publish a DMARC policy that
breaks mailing lists.  The best thing we can do is to do the above
rewrite of the From header.

The alternative is that all our Yahoo, Gmail and Hotmail subscribers
(at least) would bounce the email.

So this rewriting will happen for any From: line that has an address
that has such a DMARC policy.  We have had posts from Yahoo subscribers
bounced in the past.
-- 
Cheers,
Stephen Rothwell