[pfx] Re: Duplicate deliveries of expanded addresses (Was: Re: Avoiding message doubling via virtual aliases)

Wietse Venema via Postfix-users wrote in
 <[email protected]>:
 |Wietse Venema via Postfix-users:
 |> Steffen Nurpmeso via Postfix-users:
 |>> Wietse Venema via Postfix-users wrote in
 |>>  <[email protected]>:
 |>>  ...
 |>>|That is insufficient data to reproduce the observation.
 ...
 |>     [email protected] -> vietse -> vietse@myorigin
 |>     knodel@kent -> [email protected]
 |
 |These recipients resolve to a domain in mydestination (local delivery
 |agent).
 |
 |Because the recipients resolve to domain in mydestination, they
 |will be delivered in parallel. Each recipient is passed to a DIFFERENT
 |local delivery agent process.
 |
 |in the logging below, one local delivery agent has process ID 24992,
 |the other 24993.
 |
 |>>   May 16 17:15:17 kent postfix/local[24992]: 80E95219BDF: to=<steffen@ke\
 |>>   nt.sdaoden.eu>, orig_to=<[email protected]>, relay=local, delay=0.07, \
 |>>   delays=0.06/0/0/0, dsn=2.0.0, status=deliverable (delivers to mailbox)
 |>>   May 16 17:15:17 kent postfix/local[24993]: 80E95219BDF: to=<steffen@ke\
 |>>   nt.sdaoden.eu>, orig_to=<knodel@kent>, relay=local, delay=0.07, \
 |>>   delays=0.06/0.01/0/0, dsn=2.0.0, status=deliverable (delivers \
 |>>   to mailbox)
 |
 |The existing Postfix architecture cannot deduplicate that. It would
 |have to compute the delivery graph ahead of time, including virtual
 |and local aliasing and forwarding. 
 |
 |That graph would have to be available in one place, so that an
 |all-seeing kremlin scheduler can detect ahead of time that some
 |combination of aliasing mechanisms will resolve different addresses
 |to the same mailbox.

Thanks, thanks.  But really, i had only missed aka did not realize
what

    enable_original_recipient = no

really does.  It is exactly the configuration toggle that i need.
(For myself.  Given Jaroslaw Rafa's statement it would likely be
"super-cool" if the behaviour could be configured on a target
domain or recipient base, like with regex flags or what do i know.
I have that simple domain layout, with different names but only
one IPv4 address (even though i have a /64 IPv6 address range, but
have it disabled, as i read the standards before ~2005, and want
to reread it all again to know a bit what i am doing).  And if
people post to either name, what could i do otherwise?  Both names
are addressible.
It surely is a niche problem.)

Thanks,

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)
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