Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Sobota Září 18 12:31:56 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:
ruml na mestskeknihy.cz
SMTP error from remote mail server after RCPT TO:<ruml na mestskeknihy.cz>:
host mx.stable.cz [95.168.198.204]: 550-rejected mail because 62.36.20.210 (ES) is in a black list at
550-b.barracudacentral.org
550 http://www.barracudanetworks.com/reputation/?pr=1&ip=62.36.20.210
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