On 2022-08-16 13:17, Wietse Venema wrote:
Jonathan S?lea:

>
> All recipients[1], or only "valid" recipients[2]??
>
> [1] Makes sense if the mail is NOT delivered. Examples of that are
> spamtraps or honeypots.

Yes, that is the case here - honeypots/spamtraps.

Postfix can do that (bit see suggestion at the end).

/etc/postfix/main.cf:
    virtual_alias_maps = regexp:/etc/postfix/trap.pcre

/etc/postfix/trap.pcre:
 .+     some@local.address

Instead of .+ you can make it more specific as needed.

> [2] Requires that the Postfix SMTP server can figure out what
> addresses are valid. Otherwise, you will become a backscatter
> source.

Alright, so basically it is not really a postfix-question?

You could use the Postfix smtp-sink program in "capture to file" mode.
That program does not support TLS.

        Wietse

Thank you Wietse and also Victor who came with a great answer - as always.
This seems indeed to work as it should.

--
Jonathan Sélea

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