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

Steffen Nurpmeso via Postfix-users:
> Wietse Venema via Postfix-users wrote in
>  <[email protected]>:
>  |Steffen Nurpmeso via Postfix-users:
>  |> Thanks, thanks.  But really, i had only missed aka did not realize
>  |> what
>  |> 
>  |>     enable_original_recipient = no
>  |
>  |I exists so that domain-in-a-mailbox can distinguish different
>  |recipiemts by their X-Orginal-To: header.
>  | Wietse
>  |
>  |> 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
>  |
>  |As a de-optimization feature for a niche use case, X-Original-To:
>  |related support pervades Postfix allready more than desirable.
> 
> I think there was only one entry in this header field; you mean it
> is not merged to a list when deduplicating, but still generated
> (likely a kind of "first seen wins"), and this makes you feel
> uncomfortable, and you do not like it(?).

As explained earlier in this thread, Postfix delivers the two local
recipients in parallel. 

With each recipient, Postfix prepends X-Original-To: at time of
delivery, with the original address of THAT recipient.

	Wietse
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