Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Neděle Srpen 22 11:17:27 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:
j.zakopal na sznam.cz
SMTP error from remote mail server after RCPT TO:<j.zakopal na sznam.cz>:
host sznam.cz [46.28.105.4]: 554 5.7.1 Service unavailable; Client host [62.36.20.208] blocked using dnsbl.sorbs.net; Currently Sending Spam See:
http://www.sorbs.net/lookup.shtml?62.36.20.208
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