Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Pondělí Říjen 11 17:42:00 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:
qwe na qwe.cz
SMTP error from remote mail server after RCPT TO:<qwe na qwe.cz>:
host asafw.qwe.cz [77.78.106.95]: 550 5.7.1 Recipient not authorized, your IP has been found on a block list
botos na libimseti.cz
SMTP error from remote mail server after RCPT TO:<botos na libimseti.cz>:
host mail.libimseti.cz [109.123.202.56]: 554 5.7.1 Service unavailable; Client host [62.36.20.208] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?62.36.20.208
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