On Wed, Feb 03, 2021 at 06:33:37PM +0100, Claus Assmann wrote: > On Wed, Feb 03, 2021, Will Yardley wrote: > > > Even if Mutt doesn't set one, the first MTA it hits will add one. Not > Not really - a MTA should not make such changes. > A MSA should do it, but Message-Id: is a SHOULD not a MUST.
I stand corrected! Sorry about that. (in practice, though, in the typical case where Mutt is using the "sendmail" command of sendmail / postfix, it should add one, though, right, since that's the MSA component? That's what seemed to happen in my testing) w