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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:

  gsmochoge@nwpg.gov.za
    host mail1.nwpg.gov.za [196.15.218.221]
    SMTP error from remote mail server after RCPT TO:<gsmochoge@nwpg.gov.za>:
    550 5.1.1 <gsmochoge@nwpg.gov.za>: Recipient address rejected:
    undeliverable address: Access denied
  gsmit@postino.up.ac.za
    host aspmx.l.google.com [142.250.4.26]
    SMTP error from remote mail server after RCPT TO:<gsmit@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 b16si18578448pfm.345 - gsmtp
  gsmit@pawc.wcape.gov.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<gsmit@pawc.wcape.gov.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
  gsikwane@rustenburg.gov.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<gsikwane@rustenburg.gov.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
  gspan@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<gspan@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
  gseaton@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<gseaton@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
  gshivambo@cityvision.co.za
    host mx02.naspers.com [197.84.226.122]
    SMTP error from remote mail server after RCPT TO:<gshivambo@cityvision.co.za>:
    550 Rule imposed mailbox access for gshivambo@cityvision.co.za refused:
    user invalid
  gsnko1@student.monash.edu
    host ALT1.ASPMX.L.GOOGLE.COM [173.194.202.26]
    SMTP error from remote mail server after RCPT TO:<gsnko1@student.monash.edu>:
    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 s5si21944948pfk.357 - gsmtp
  gscmel001@mail.uct.ac.za
    all hosts for 'mail.uct.ac.za' have been failing for a long time (and retry time not reached)