Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Úterý Září 14 05:09:27 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:
janek na povalec.cz
SMTP error from remote mail server after end of data:
host aspmx.l.google.com [74.125.133.26]: 550-5.7.1 [62.36.20.208 18] Our system has detected that this message is
550-5.7.1 likely suspicious due to the very low reputation of the sending IP
550-5.7.1 address. To best protect our users from spam, the message has been
550-5.7.1 blocked. Please visit
550 5.7.1 https://support.google.com/mail/answer/188131 for more information. i9si10166352wmi.100 - gsmtp
janeckovaz na orlet.cz
SMTP error from remote mail server after RCPT TO:<janeckovaz na orlet.cz>:
host mail.dc3.cz [81.0.217.5]: 550 Recipient not found
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