Jun 25 15:12:23 albatross postfix/smtp[16480]: Untrusted TLS connection 
established to mail.lastmikoi.net[212.83.147.35]:25: TLSv1.2 with cipher 
ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Jun 25 15:12:23 albatross postfix/smtp[16480]: 3gz3jG3v0Mz7LjZ: 
to=<...@lastmikoi.net>, relay=mail.lastmikoi.net[212.83.147.35]:25, delay=2229, 
delays=2229/0/0.09/0, dsn=4.7.5, status=deferred (Server certificate not 
trusted)

But why is the server certificate not trusted (and the email being
deferred)?

smtp_tls_security_level = dane
smtp_dns_support_level = dnssec

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Vorstand: Patrick Ben Koetter, Marc Schiffbauer
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