Mail delivery failed: returning message to sender

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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:

  keri@duraan.co.za
    host mail.duraan.co.za [74.220.219.210]
    SMTP error from remote mail server after RCPT TO:<keri@duraan.co.za>:
    550 No Such User Here
  kerih@crosscape.co.za
    host mail.crosscape.co.za [129.232.136.137]
    SMTP error from remote mail server after RCPT TO:<kerih@crosscape.co.za>:
    550 Unroutable address
  keri@ecit.co.za
    host mail.ecit.co.za [41.203.16.247]
    SMTP error from remote mail server after RCPT TO:<keri@ecit.co.za>:
    550 Unroutable address
  keriann@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<keriann@mweb.co.za>:
    550 rejected because recipient verify failed -- user not found
  kerhode@icon.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<kerhode@icon.co.za>:
    550 rejected because recipient verify failed -- user not found
  keret@netactive.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<keret@netactive.co.za>:
    550 rejected because recipient verify failed -- user not found
  keri@redrocket.co.za
    all hosts for 'redrocket.co.za' have been failing for a long time (and retry time not reached)
  keraftan@ael.co.za
    host ael.co.za [197.221.14.64]
    SMTP error from remote mail server after RCPT TO:<keraftan@ael.co.za>:
    550 relay not permitted
  kerasmus@kv3.co.za
    host mx1.improvmx.com [51.91.128.125]
    SMTP error from remote mail server after RCPT TO:<kerasmus@kv3.co.za>:
    550 5.1.9 Relay not permitted. (#id-5.9.2) - ImprovMX
  kepillay@tracker.co.za
    host mx01.tracker.co.za [102.130.12.49]
    SMTP error from remote mail server after RCPT TO:<kepillay@tracker.co.za>:
    550 Rule imposed as mauve-patches@sourceware.org is blacklisted on Trustwave Email IP Reputation Service - see rbladmin.trustwave.com/?ip=13.251.164.127
  keri@gmail.com
    host gmail-smtp-in.l.google.com [74.125.130.27]
    SMTP error from remote mail server after RCPT TO:<keri@gmail.com>:
    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 pf10si23262768pjb.82 - gsmtp
  kephetho14@gmail.com
    host gmail-smtp-in.l.google.com [74.125.130.27]
    SMTP error from remote mail server after RCPT TO:<kephetho14@gmail.com>:
    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 pf10si23262768pjb.82 - gsmtp
  ker@cybertrade.co.za
    all hosts for 'cybertrade.co.za' have been failing for a long time (and retry time not reached)
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Date: Mon, 29 Nov 2021 15:09:58 +0800
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