Mail delivery failed: returning message to sender

[Singnet Mail Delivery System <noreply@singnet.com.sg>]

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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:

  charl@onewayauto.co.za
    host mail.onewayauto.co.za [196.22.142.8]
    SMTP error from remote mail server after RCPT TO:<charl@onewayauto.co.za>:
    550 Unroutable address
  Charl.Gerber@datavoice.co.za
    host aspmx.l.google.com [142.251.12.27]
    SMTP error from remote mail server after RCPT TO:<Charl.Gerber@datavoice.co.za>:
    550-5.1.1 The email account that you tried to reach does not exist. Please try
    550-5.1.1 double-checking the recipient's email address for typos or
    550-5.1.1 unnecessary spaces. Learn more at
    550 5.1.1  https://support.google.com/mail/?p=NoSuchUser j17si21975791pjy.153 - gsmtp
  charl@werner.co.za
    host ASPMX.L.GOOGLE.COM [142.251.12.27]
    SMTP error from remote mail server after RCPT TO:<charl@werner.co.za>:
    550-5.1.1 The email account that you tried to reach does not exist. Please try
    550-5.1.1 double-checking the recipient's email address for typos or
    550-5.1.1 unnecessary spaces. Learn more at
    550 5.1.1  https://support.google.com/mail/?p=NoSuchUser j15si18107622pfh.122 - gsmtp
  charl@kristensen.co.za
    host av.openemail.net [89.31.213.69]
    SMTP error from remote mail server after RCPT TO:<charl@kristensen.co.za>:
    550 cuda_nsu 5.4.1 Recipient address rejected:
    Access denied. AS(201806281) [CWLGBR01FT042.eop-gbr01.prod.protection.outlook.com]
  charj@toga.co.za
    host mail.toga.co.za [41.203.18.74]
    SMTP error from remote mail server after RCPT TO:<charj@toga.co.za>:
    550 Unroutable address
  charl@kevro.co.za
    host kevro-co-za.mail.protection.outlook.com [104.47.0.36]
    SMTP error from remote mail server after RCPT TO:<charl@kevro.co.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [HE1EUR01FT012.eop-EUR01.prod.protection.outlook.com]
  charl@an.tdp.co.za
    host relay2.ncc.co.za [102.132.9.26]
    SMTP error from remote mail server after RCPT TO:<charl@an.tdp.co.za>:
    554 5.7.1 E-mail firewall rules determined that 13.251.146.0 is not allowed to send e-mail to (*)charl@an.tdp.co.za.
  charl@butterfield.co.za
    host butterfield-co-za.mail.protection.outlook.com [104.47.6.36]
    SMTP error from remote mail server after RCPT TO:<charl@butterfield.co.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [VE1EUR02FT016.eop-EUR02.prod.protection.outlook.com]
  charity.bodiba@kpmg.co.za
    host mxa-00120b02.gslb.pphosted.com [67.231.148.125]
    SMTP error from remote mail server after RCPT TO:<charity.bodiba@kpmg.co.za>:
    550 5.1.1 User Unknown
  Charity.Moyo@sc.com
    host cluster4.us.messagelabs.com [67.219.250.107]
    SMTP error from remote mail server after RCPT TO:<Charity.Moyo@sc.com>:
    550 Invalid recipient <Charity.Moyo@sc.com> (#5.1.1)
  charityhumcfttfr@msn.com
    host msn-com.olc.protection.outlook.com [104.47.56.33]
    SMTP error from remote mail server after pipelined end of data:
    550 5.7.1 Unfortunately, messages from [13.251.146.0] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [DM3NAM02FT006.eop-nam02.prod.protection.outlook.com]

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From: "BEN JOHNSON" <mauve-patches@sourceware.org>
To: Recipients <mauve-patches@sourceware.org>
Subject: WARM REGARDS
Date: Mon, 29 Nov 2021 14:05:36 +0800

Good Day,
 An exhaustive and meticulous search was conducted and it is in connection with this search that I'm writing to you today base on your surname which you share with a client that is now deceased. Revert back to me for more details to be given to you. 
 Sincerely,
Barr Ben Johnson