Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Neděle Říjen 3 03:14:31 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:
andiseklilien na libimseti.cz
SMTP error from remote mail server after RCPT TO:<andiseklilien na libimseti.cz>:
host mail.libimseti.cz [109.123.202.56]: 554 5.7.1 <out08.wanadoo.es[62.36.20.208]>:
Client host rejected: Greylisting in effect, sending server blacklisted
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