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  audiovw@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<audiovw@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
  audioarc@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<audioarc@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
  audagnotti@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<audagnotti@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
  audensberg@automail.co.za
    host mfw.busgateway.is.co.za [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<audensberg@automail.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
  audi4@audinelspruit.co.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<audi4@audinelspruit.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
  Aude.debois@agrana.com
    host agrana-com.mail.protection.outlook.com [104.47.5.36]
    SMTP error from remote mail server after RCPT TO:<Aude.debois@agrana.com>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [HE1EUR02FT055.eop-EUR02.prod.protection.outlook.com]
  audit@kaisagroup.com
    host mail.kaisagroup.com.cncare.tech [45.251.108.186]
    SMTP error from remote mail server after initial connection:
    554-ironport.kaisagroup.com
    554 Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.