failure notice

[MAILER-DAEMON at hero.in4.sk]

Hi. This is the qmail-send program at hero.in4.sk.
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.

<opikl at in4.sk>:
Sorry, no mailbox here by that name. (#5.1.1)

--- Below this line is a copy of the message.

Return-Path: <czdebian-l at debian.cz>
Received: (qmail 2044 invoked from network); 17 May 2021 19:56:44 -0000
Received: from unknown (HELO ?179.6.208.122?) (179.6.208.122)
  by ns.in4vent.sk with SMTP; 17 May 2021 19:56:44 -0000
Message-ID: <001801d74b2c$012e6a26$3ede1ebf at fgpwuk>
From: "opikl at in4.sk" <czdebian-l at debian.cz>
To: <opikl at in4.sk>
Subject: Investutje do Crypto. Ziskeite 100 000 EUR kazzdy mseic 
Date: 17 May 2021 08:32:42 -0600
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2800.2602
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.2602

Jedina vec, kterou budete potrebovat, je:  Vas EMAIL
Nastaveni tohoto programu trva jen  1 HODINU. Pote nasleduje
absolutne  NIC NEMUSITE. Mate absolutne
NIC, co byste mohli prohrat, a neexistuje zadny OMEZENI vyse prijmu, ktere muzete
vygenerovat z tento jediny obchodni program.
Zacneme, postupujte podle pokynu ..... 
http://nicenecei.fluroagra.cn/?GHVth*$eZzERD*ftGVYBHUnjIMjnKBiFC*rdXFTCHyigINUHgvHFCdgIHVIFcdRXDftc