Mail delivery failed: returning message to sender

Mail Delivery System Mailer-Daemon na
Úterý Říjen 5 12:53:48 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:

  kocvara na
    SMTP error from remote mail server after end of data:
    host []: 554 message refused (#5.7.1) - for more information visit

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