Mail delivery failed: returning message to sender

Mail Delivery System Mailer-Daemon na
Čtvrtek Srpen 12 15:22:32 CEST 2021

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  kajoslav074 na
    SMTP error from remote mail server after end of data:
    host []: 554 message refused (#5.7.1) - for more information visit
  iloveyumyfriends21 na
    SMTP error from remote mail server after RCPT TO:<iloveyumyfriends21 na>:
    host []:
    550-5.2.1 The user you are trying to contact is receiving mail at a rate that
    550-5.2.1 prevents additional messages from being delivered. For more
    550-5.2.1 information, please visit
    550 5.2.1 b1si2752018wrh.515 - gsmtp

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