[Tulungan] Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the Postfix program at host mx1.edunet.ru.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

			The Postfix program

<crisun at edunet.ru>: host mail0.edunet.ru[213.184.154.1] said: 550
    crisun at edunet.ru unknown user account (in reply to RCPT TO command)
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