On Wed, Sep 30, 2026 at 05:30:58AM +0200, Luca Cavana via Postfix-users wrote:

> Now, it does work. But by reading the man 5 postconf I have the feeling that
> reject_authenticated_sender_login_mismatch should already match the SASL
> login name to the MAIL FROM: address implicitly:

That feeling is based on a misreading and/or misinterpretation of the
documentation.

> NOQUEUE: reject: RCPT from unknown[2001:67c:d68:13::e]: 553 5.7.1
> <[email protected]>: Sender address rejected: not owned by user
> [email protected]; from=<[email protected]>
> to=<redacted> proto=ESMTP helo=<[IPV6:2001:67c:d68:13::e]>

As expected.

> ... how is so? What I'm doing wrong?

You're deleting the table entry required to match the sender to the
associated SASL login.

-- 
    Viktor.  🇺🇦 Слава Україні!
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