On Fri, Sep 24, 2021 at 01:45:04AM +0200, Francesc Peñalvez wrote:
> I re-ask again since my postscreen responds to connections with dnsbl
> code 450 instead of a 5xx, with which those servers are trying to resend
> the mail again and again
>
> postfix/submission/postscreen[1724625]: NOQUEUE: reject: RCPT from
> [XXX.XXX.XXX.XXX]:46994: 450 4.7.1 Service unavailable; client
> [XXX.XXX.XXX.XXX] blocked using zen.spamhaus.org;
> from=<[email protected]>,
> to=<[email protected]>, proto=ESMTP, helo=<mail.shifts.top>
Don't set "soft_bounce = yes" once you believe your configuration is
correct.
--
Viktor.
