On Sun, Oct 12, 2014 at 06:07:32PM -0400, Wietse Venema wrote:
> > Yes, but those are single-instance headers that pertain to the
> > message as a whole, unlike trace information that pertains to a
> > particular hop. Things like "X-Envelope-From" and various other
> > prepends are typically hop-specific information, can be prepended
> > multiple times, and their origin becomes ambiguous when placed
> > below "Received" by some MTAs and above by others.
>
> Pointer to RFC or best-practice document, please?
I am not aware of any formal standards covering this. This is
my interpretation of current practice.
> As for the claim that Milters are supposed to see the on-the-wire
> message, do you have a pointer to support that?
I am hoping Claus Assmann might comment on this, I believe he is
subscribed to the list. As for me, that is my interpretation of
why Sendmail avoids passing the local Received header to milters.
--
Viktor.
