The original message was received at Mon, 23 Oct 2023 13:46:09 +0200 from m0316693.ppops.net [127.0.0.1]

----- The following addresses had permanent fatal errors ----- daniel.viribay@educa.madrid.org (reason: 553 sorry, mail to that recipient is not accepted (#5.7.1))

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<<< 553 sorry, mail to that recipient is not accepted (#5.7.1) 550 5.1.1 daniel.viribay@educa.madrid.org... User unknown <<< 503 RCPT first (#5.5.1)