Mail delivery failed: returning message to sender

[Singnet Mail Delivery System]

This message was created automatically by mail delivery software.

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:

  cmconsultants@axemail.co.za
    host spe.ucebox.co.za [41.76.215.28]
    SMTP error from remote mail server after RCPT TO:<cmconsultants@axemail.co.za>:
    550 No such user (cmconsultants) -ERR cmconsultants@axxess.co.za not found
  cmd@microweb.co.za
    host mail.microweb.co.za [129.232.249.106]
    SMTP error from remote mail server after RCPT TO:<cmd@microweb.co.za>:
    550 Unroutable address
  cmetals@wol.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<cmetals@wol.co.za>:
    550-rejected because 13.251.197.89 is in a black list at combined.abusix.dnsbl
    550 https://lookup.abusix.com/search?q=13.251.197.89
  cmelliott@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<cmelliott@mweb.co.za>:
    550-rejected because 13.251.197.89 is in a black list at combined.abusix.dnsbl
    550 https://lookup.abusix.com/search?q=13.251.197.89
  cmeier@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<cmeier@mweb.co.za>:
    550-rejected because 13.251.197.89 is in a black list at combined.abusix.dnsbl
    550 https://lookup.abusix.com/search?q=13.251.197.89
  cmctiffin@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<cmctiffin@mweb.co.za>:
    550-rejected because 13.251.197.89 is in a black list at combined.abusix.dnsbl
    550 https://lookup.abusix.com/search?q=13.251.197.89
  cmcrobie@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<cmcrobie@mweb.co.za>:
    550-rejected because 13.251.197.89 is in a black list at combined.abusix.dnsbl
    550 https://lookup.abusix.com/search?q=13.251.197.89
  cmcdonald@imperialbank.co.za
    host mxgw07.nedbank.co.za [168.142.192.80]
    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.
  cmedina@zoology.up.ac.za
    host aspmx.l.google.com [142.251.10.26]
    SMTP error from remote mail server after RCPT TO:<cmedina@zoology.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 t3si5775336pgb.848 - gsmtp
  cmcvizah@vsnl.com
    all hosts for 'vsnl.com' have been failing for a long time (and retry time not reached)
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