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:

  hkchoi@netvigator.com
    host imsmx1.netvigator.com [218.102.23.218]
    SMTP error from remote mail server after initial connection:
    554-yironin01.netvigator.com
    554 Rejected: Spam email from server IP <52.221.55.32> is blocked by Talos. Please go to "https://www.talosintelligence.com/reputation_center/lookup?search=52.221.55.32" for IP unblock request.
  hjw@kingsley.co.za
    host mail.kingsley.co.za [23.111.151.150]
    SMTP error from remote mail server after RCPT TO:<hjw@kingsley.co.za>:
    550-No such person at this address. If you feel you have reached this message
    550 in error\, please call +27823096710"