Undelivered Mail Returned to Sender
8 Jan
2024
8 Jan
'24
5:08 a.m.
This is the mail system at host smtp1.osuosl.org.
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
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The mail system
stefa.lemberg@mai.ru: host MX.MAI.RU[217.9.89.235] said: 550 5.1.1 stefa.lemberg@mai.ru... User unknown (in reply to RCPT TO command)
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MAILER-DAEMON@osuosl.org