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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:

  hector@ctec.co.za
    host mx1.tld-mx.com [169.239.219.2]
    SMTP error from remote mail server after end of data:
    550 High probability of spam
  hectore@vericredonline.com
    host mail.vericredonline.com [197.221.12.133]
    SMTP error from remote mail server after RCPT TO:<hectore@vericredonline.com>:
    550 Unroutable address
  hech@cybersmart.co.za
    host mail1.mx.cybersmart.co.za [196.41.124.80]
    SMTP error from remote mail server after RCPT TO:<hech@cybersmart.co.za>:
    550 5.7.1 <hech@cybersmart.co.za>: Recipient address rejected:
    Access denied
  hechterj@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<hechterj@mweb.co.za>:
    550 rejected because recipient verify failed -- user not found
  heden@stmarys.pta.school.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<heden@stmarys.pta.school.za>:
    550 - Rejected Inactive Account
  hector@grupoantolin.co.za
    all hosts for 'grupoantolin.co.za' have been failing for a long time (and retry time not reached)