Mail delivery failed: returning message to sender

Mail Delivery System Mailer-Daemon na orange.es
Čtvrtek Říjen 7 17:39:21 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:

  hotline na backer.cz
    SMTP error from remote mail server after RCPT TO:<hotline na backer.cz>:
    host ns1.backer.cz [188.120.211.3]: 554 5.7.1 Service unavailable; Client host [62.36.20.214] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?62.36.20.214



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