Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Úterý Říjen 19 19:24:27 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:
martina.tychtlova na crc.cz
SMTP error from remote mail server after RCPT TO:<martina.tychtlova na crc.cz>:
host mx1.orlen.pl [91.212.223.101]: 550 5.1.1 User Unknown
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