Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Pondělí Srpen 30 20:23:58 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:
m na k.cz
SMTP error from remote mail server after end of data:
host clear.sic.cz [81.0.208.26]: 554 5.7.1 Spam message rejected
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