failure notice

[MAILER-DAEMON at ns.yahohost.com]

Hi. This is the qmail-send program at ns.yahohost.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<dbc5efdc4 at monotech.co.kr>:
Sorry, no mailbox here by that name. vpopmail (#5.1.1)

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From: "dbc5efdc4 at monotech.co.kr" <czdebian-l at debian.cz>
To: <dbc5efdc4 at monotech.co.kr>
Subject: Re:Bitcoin Investment
Date: 30 Mar 2021 03:19:19 +0700
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