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  deanguitars@global.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<deanguitars@global.co.za>:
    550-rejected because 52.221.55.32 is in a black list at combined.abusix.dnsbl
    550 https://lookup.abusix.com/search?q=52.221.55.32
  deanr@cais.co.za
    host mxbox.marsdns.co.za [197.189.236.84]
    SMTP error from remote mail server after RCPT TO:<deanr@cais.co.za>:
    550 relay not permitted
  deanm@MORECORP.CO.ZA
    host morecorp-co-za.mail.protection.outlook.com [104.47.1.36]
    SMTP error from remote mail server after RCPT TO:<deanm@MORECORP.CO.ZA>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [VE1EUR01FT048.eop-EUR01.prod.protection.outlook.com]