Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Středa Srpen 25 00:43:27 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:
lamer456 na sezam.cz
SMTP error from remote mail server after RCPT TO:<lamer456 na sezam.cz>:
host mx11.onebit.cz [178.238.37.247]: 554 5.7.1 Service unavailable; Client host [62.36.20.210] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?62.36.20.210
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