Mail delivery failed: returning message to sender
Mail Delivery System
Mailer-Daemon na orange.es
Pondělí Září 20 21:14:10 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:
podpora na optimato.vshosting.cz
SMTP error from remote mail server after RCPT TO:<podpora na optimato.vshosting.cz>:
host optimato.vshosting.cz [217.16.180.96]: 550 5.1.1 <podpora na optimato.vshosting.cz>:
Recipient address rejected: User unknown in virtual mailbox table
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