On Mon, Jul 29, 2024 at 09:28:51AM +0200, Ralf Hildebrandt via Postfix-users
wrote:
> Ever so often I'm using transport entries to bounce typo domains or
> "noreply" addresses prior to the expiration after
> $maximum_queue_lifetime.
>
> Something like:
> noreplytoMMS.telekom.de error:5.1.2 Doesn't accept mail
>
> But I noticed that this also causes mails with the sender
> domain/address being rejected when used as envelope sender.
>
> Is this intentional or a side-effect?
I'm guessing you have "smtpd_reject_unlisted_sender = yes"?
In that case, this'd be expected.
--
Viktor.
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