Mail delivery failed: returning message to sender

Mail Delivery System Mailer-Daemon na orange.es
Úterý Září 14 10:17:46 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:

  ohlinsman na kos.cz
    SMTP error from remote mail server after RCPT TO:<ohlinsman na kos.cz>:
    host mail.kos.cz [185.252.90.8]: 550 5.1.1 <ohlinsman na kos.cz>:
    Recipient address rejected: User unknown in relay recipient table



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