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  c29@elitegroup.co.za
    host mail.elitegroup.co.za [196.41.122.249]
    SMTP error from remote mail server after RCPT TO:<c29@elitegroup.co.za>:
    550 No Such User Here
  c8@hetzner.co.za
    host inbound.cpt.host-h.net [197.189.248.34]
    SMTP error from remote mail server after RCPT TO:<c8@hetzner.co.za>:
    550 Unroutable address
  c4jay@iafrica.com
    host nav-gateway.mweb.co.za [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<c4jay@iafrica.com>:
    550-rejected because 13.251.245.207 is in a black list at
    550-b.barracudacentral.org
    550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207
  c955a818@nyc.rr.com
    host pkvw-mx.msg.pkvw.co.charter.net [47.43.26.7]
    SMTP error from remote mail server after RCPT TO:<c955a818@nyc.rr.com>:
    550 5.1.1 <c955a818@nyc.rr.com> recipient rejected
  c67@pixie.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<c67@pixie.co.za>:
    550-rejected because 13.251.245.207 is in a black list at
    550-b.barracudacentral.org
    550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207
  c3fll@ntlworld.com
    host mx.tb.ukmail.iss.as9143.net [212.54.56.11]
    SMTP error from remote mail server after RCPT TO:<c3fll@ntlworld.com>:
    550 5.1.1 MXIN501 mailbox c3fll@ntlworld.com unknown ;id=rZl5mw0fe3IdwrZl7msaYn;sid=rZl5mw0fe3Idw;mta=mx5.tb;d=20211129;t=070326[CET];ipsrc=13.251.245.207;
  c5df1c44@cmsgroup.co.za
    host mail.cmsgroup.co.za [156.38.167.146]
    SMTP error from remote mail server after RCPT TO:<c5df1c44@cmsgroup.co.za>:
    550 Requested action not taken: mailbox unavailable or not local.