I don't see why it's a problem. The reasonable thing for this draft to do
is to describe the well established existing practice, since that practice
is not going to change.
It's a problem the draft has to address. I think we're agreeing.
On further thought, it's a fatal and incurable flaw in the draft. See
next message.
Um, I'm not speaking hypothetically here. I've been running mail through
pracmail with this setup for 20 years. A lot of other qmail and procmail
and courier users do, too.
Now re-process that mail honouring the original Envelope logic.
You can't. When the MTA runs procmail or maildrop, it passes a lot of
context beyond the envelope address. For more details, see the
documentation for any of the MTAs that have been delivering through
procmail and its ilk for 30 years.
Regards,
John Levine, johnl(_at_)taugh(_dot_)com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly
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