What is the reason my e-mail message not to be delivered ?

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Date: Fri, 15 May 2026 21:52:23 +0000
From: MAILER-DAEMON@yahoo.com
To: galingrigorov@yahoo.com
Subject: Failure Notice
Content-Type: multipart/report; report-type=delivery-status;
boundary="-=Part.b8d9c.8186136107ca8da2.19e2da057b6.d491af15a5a3ff2b=-"
Content-Length: 832

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Content-Type: text/plain; charset=UTF-8

Sorry, we were unable to deliver your message to the following address.

<marieta_grigorova@hotmail.com>:
Unable to deliver message after multiple retries, giving up.

---------- Forwarded message ----------

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Content-Type: message/delivery-status

Reporting-MTA: dns; sonic-mta.mail.yahoo.com

Final-Recipient: rfc822; marieta_grigorova@hotmail.com
Action: failed
Status: 5.0.0

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Content-Type: text/rfc822-headers

From: "Galin Grigorov" galingrigorov@yahoo.com
To: <marieta_grigorova@hotmail.com>
Subject: за лекарствата

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