Peter Münster writes:
On Thu, Sep 07 2023, Stephen J. Turnbull wrote:
and then have a "reproduce defects" flag for the reassemble functions.
Yes, that sounds good. Are you ready to do that? And if yes, what recompense would you like to receive please?
I could do it, but I don't really want to.
The problem is even if it were done, it's a very fragile feature because it depends on collecting particular behaviors that can change at any time. So I'm unsure (50-50 at best) that it would get into Python, and then I don't know if it would get into Mailman because it's not obvious anybody would want the responsibility of continuous maintenance in order to take account of all the idiosyncrasies of homebrew mail clients of various companies.
The current DMARC behavior of changing From and Reply-To is much more robust, and I just don't think there's that big a constituency for making life easy for disruptive actors like Google.
Steve