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:

  smaharaj@mars.cs.unp.ac.za
    retry timeout exceeded
  wallerfj@eskom.co.za
    host mx1.eskom.seagatestoragecloud.co.za [169.239.240.92]
    SMTP error from remote mail server after RCPT TO:<wallerfj@eskom.co.za>:
    550-Callout verification failed:
    550 550 5.1.1 User unknown
  vdevenpj@eskom.co.za
    host mx1.eskom.seagatestoragecloud.co.za [169.239.240.92]
    SMTP error from remote mail server after RCPT TO:<vdevenpj@eskom.co.za>:
    550-Callout verification failed:
    550 550 5.1.1 User unknown
  volts@saemail.co.za
    host saemail.co.za [169.239.217.26]
    SMTP error from remote mail server after RCPT TO:<volts@saemail.co.za>:
    550 No such person at this address.
  /sales@cclarity.co.za
    host othala.iewc.co.za [154.73.34.78]
    SMTP error from remote mail server after RCPT TO:</sales@cclarity.co.za>:
    550 Restricted characters in address
  wendytruter@acutts.co.za
    host mail4.databias.co.za [51.140.241.173]
    SMTP error from remote mail server after pipelined end of data:
    550 Possible spam / virus
  neil.vanderwesthuizen@pamgolding.co.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<neil.vanderwesthuizen@pamgolding.co.za>:
    550 rejected because recipient verify failed -- user not found
  zeyn@compudoc.co.za
    host mail.cdoc.co.za [46.165.223.102]
    SMTP error from remote mail server after initial connection:
    550 Blacklisted
  ursulab@nedcor.co.za
    host mxgw06.nedbank.co.za [168.142.192.40]
    SMTP error from remote mail server after DATA:
    550 #5.7.1 Your access to submit messages to this e-mail system has been rejected.
  warrenb@nedcor.co.za
    host mxgw06.nedbank.co.za [168.142.192.40]
    SMTP error from remote mail server after DATA:
    550 #5.7.1 Your access to submit messages to this e-mail system has been rejected.
  mikehome@niobe.marques.co.za
    host isdus-3.internext.co.za [148.251.243.117]
    SMTP error from remote mail server after RCPT TO:<mikehome@niobe.marques.co.za>:
    550 5.1.1 <mikehome@niobe.marques.co.za>... User unknown
  wcomp@pixie.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<wcomp@pixie.co.za>:
    550 rejected because recipient verify failed -- user not found
  topland@polka.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<topland@polka.co.za>:
    550 rejected because recipient verify failed -- user not found
  buttercup@home.vnh.co.za
    host mail.imcf.co.za [196.31.215.10]
    SMTP error from remote mail server after RCPT TO:<buttercup@home.vnh.co.za>:
    554 5.7.1 <buttercup@home.vnh.co.za>: Relay access denied
  suvana@compass.org.za
    host compass-org-za.mail.protection.outlook.com [104.47.8.36]
    SMTP error from remote mail server after RCPT TO:<suvana@compass.org.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [AM5EUR03FT054.eop-EUR03.prod.protection.outlook.com]
  vineshn@abi.co.za
    all hosts for 'abi.co.za' have been failing for a long time (and retry time not reached)
  topdawg@metroweb.co.za
    host pmg1.absolutehosting.co.za [197.81.132.10]
    SMTP error from remote mail server after RCPT TO:<topdawg@metroweb.co.za>:
    550 5.7.1 Service unavailable; client [13.251.146.0] blocked using dnsbl.zapbl.net
  vddus...@libarts.up.ac.za
    host aspmx.l.google.com [142.251.10.27]
    SMTP error from remote mail server after RCPT TO:<vddus...@libarts.up.ac.za>:
    553-5.1.3 The recipient address <vddus...@libarts.up.ac.za> is not a valid
    553-5.1.3 RFC-5321 address. Learn more at
    553 5.1.3  https://support.google.com/mail/answer/6596 t20si20213654pgu.327 - gsmtp
  jagm@postino.up.ac.za
    host alt2.aspmx.l.google.com [142.250.115.27]
    SMTP error from remote mail server after RCPT TO:<jagm@postino.up.ac.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 n19si11925622otq.47 - gsmtp
  akemp@postillion.up.ac.za
    host aspmx.l.google.com [142.251.10.27]
    SMTP error from remote mail server after RCPT TO:<akemp@postillion.up.ac.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 t20si20213654pgu.327 - gsmtp
  vans@blueworld.co.za
    host mail.blueworld.co.za [41.204.202.45]
    SMTP error from remote mail server after RCPT TO:<vans@blueworld.co.za>:
    550 Unroutable address
  vanessa@hyperpneumatics.co.za
    host mx1.tld-mx.com [169.239.217.2]
    SMTP error from remote mail server after RCPT TO:<vanessa@hyperpneumatics.co.za>:
    550 no mailbox by that name is currently available
  meemaj@sac.ecape.school.za
    host fsmx.mithral.co.za [176.9.104.142]
    SMTP error from remote mail server after RCPT TO:<meemaj@sac.ecape.school.za>:
    551 5.7.1 <meemaj@sac.ecape.school.za>: Recipient address rejected:
    This domain no longer receives mail please use @sacschool.com
  unikz@discoverymail.co.za
    host pinpoint-mx3.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<unikz@discoverymail.co.za>:
    550 rejected because recipient verify failed -- user not found
  zubair.g@sa.co.za
    host mail.siyabona.com [196.25.118.7]
    SMTP error from remote mail server after RCPT TO:<zubair.g@sa.co.za>:
    550 5.1.1 Recipient unknown <zubair.g@sa.co.za>
  vandere@vodacom.co.za
    host cluster5.eu.messagelabs.com [195.245.231.69]
    SMTP error from remote mail server after RCPT TO:<vandere@vodacom.co.za>:
    550 Invalid recipient <vandere@vodacom.co.za> (#5.1.1)
  zanele.mogegeh@vcontractor.co.za
    host cluster5.eu.messagelabs.com [195.245.231.69]
    SMTP error from remote mail server after RCPT TO:<zanele.mogegeh@vcontractor.co.za>:
    550-Invalid recipient <zanele.mogegeh@vcontractor.co.za>
    550 (#5.1.1)
  leonc@dcs.discovery.co.za
    host za-mx.discovery.co.za [196.6.208.63]
    SMTP error from remote mail server after RCPT TO:<leonc@dcs.discovery.co.za>:
    550 #5.1.0 Address rejected.
  nora@maths.uct.ac.za
    all hosts for 'maths.uct.ac.za' have been failing for a long time (and retry time not reached)

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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 13:23:56 +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