Hello there,
I just wanted to send a mail. However, I got an undeilvered mail message.
From the postfix log:
782F76C8F57: to=<info@example1.de>, relay=mail01.example2.de[a.b.c.d]:25, delay=5.7, delays=0.46/0.03/0.12/5, dsn=5.7.54, status=bounced (host mail01.example2.de[a.b.c.d] said: 550 5.7.54 SMTP; Unable to relay recipient in non-accepted domain (in reply to RCPT TO command))
Normaly the mails are delivered successfully. DMARC, DKIM and rDNS should all be correct.
Any ideas?
Thanks in advance.