Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Pondělí Říjen 25 08:22:30 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:
xjjghjk na zut.cz
SMTP error from remote mail server after RCPT TO:<xjjghjk na zut.cz>:
host mail2.ignum.cz [195.181.251.10]: 550 relay not permitted
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