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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:

  ashtonfin@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<ashtonfin@mweb.co.za>:
    550 rejected because recipient verify failed -- user not found
  ashton.ncube@xps.cfgrp.co.za
    host in.hes.trendmicro.eu [52.58.62.239]
    SMTP error from remote mail server after RCPT TO:<ashton.ncube@xps.cfgrp.co.za>:
    554 5.7.1 <ashton.ncube@xps.cfgrp.co.za>: Recipient address rejected:
    NO-DOMAIN.
  ashsat001@mail.uct.ac.za
    all hosts for 'mail.uct.ac.za' have been failing for a long time (and retry time not reached)