Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Čtvrtek Srpen 12 16:15:43 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:
eva na sixta.cz
SMTP error from remote mail server after end of data:
host mx1.mailchannels.net [34.217.152.37]: 550 5.7.1 Message rejected
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