Hatte jemand schonmal folgende Fehlermeldung bei Upload-Mail und hat eine Lösung ? (Upload-Mail funktioniert prinzipiell sehr gut, diese Meldung kommt nur bei einem Lieferanten immer) Betreff: Undelivered Mail Returned to Sender This is the mail system at host mailout04.t-online.de. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <
[email protected]>: host duo-mailin.datev.de[12] said: 550 5.7.1 Security policy violation: sender address not authorized (duo-acl-milter: p2xocgh0), servertime=May 28 10:42:38, server=idvduomailin04.services.datev.de, client=194.18 (in reply to RCPT TO command)
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