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  ats@wol.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<ats@wol.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
  atrsas@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<atrsas@mweb.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
  atps@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<atps@mweb.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
  atronics2@gmail.com
    host gmail-smtp-in.l.google.com [142.250.4.26]
    SMTP error from remote mail server after RCPT TO:<atronics2@gmail.com>:
    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 5si17558677plj.15 - gsmtp
  atrollip@scientia.up.ac.za
    host aspmx.l.google.com [142.251.12.26]
    SMTP error from remote mail server after RCPT TO:<atrollip@scientia.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 j9si24495818plh.192 - gsmtp
  ats@eci.co.za
    host mail.awe.co.za [156.38.139.242]
    SMTP error from remote mail server after RCPT TO:<ats@eci.co.za>:
    554 5.7.1 Service unavailable; Client host [13.251.245.207] blocked using b.barracudacentral.org; http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207