Re: [ietf-smtp] homework, not an experiment, draft-crocker-email-deliver

On 8/3/2021 12:30 PM, Viktor Dukhovni wrote:
> It makes the localpart content of the "Delivered-To" header a private
> matter for the MTA that adds the header.  It need not identify the
> mailbox to anything other than the MTA.
>
> For purposes of loop detection the order in which "Delivered-To" headers
> are added is not material, so requiring it to be prepended, as though a
> trace header, may not comport with some existing implementations.  FWIW,
> in Postfix it is in fact prepended.

Viktor,

1. How does that affect the technical specification?

2. When there is a sequence of Delivered-To header fields, for a mail 
that transits one or more intermediaries before 'final' delivery, how 
does this affect utility of the field?

d/

--
Dave Crocker
Brandenburg InternetWorking
bbiw.net

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