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  diederik.steenekamp@citigroup.com
    host mx-b.mail.citi.com [67.231.153.94]
    SMTP error from remote mail server after RCPT TO:<diederik.steenekamp@citigroup.com>:
    550 5.1.1 User Unknown
  diedericks@iburst.co.za
    host mailguard6.neotel.co.za [41.168.2.5]
    SMTP error from remote mail server after RCPT TO:<diedericks@iburst.co.za>:
    554 5.7.1 <diedericks@iburst.co.za>: Recipient address rejected:
    Access denied
  Diego.FELICIANI@agrana.com
    host agrana-com.mail.protection.outlook.com [104.47.4.36]
    SMTP error from remote mail server after RCPT TO:<Diego.FELICIANI@agrana.com>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [AM5EUR02FT030.eop-EUR02.prod.protection.outlook.com]
  die123.zander@t-online.de
    host mx03.t-online.de [194.25.134.73]
    SMTP error from remote mail server after RCPT TO:<die123.zander@t-online.de>:
    550-5.1.1 user unknown
    550 5.1.1 Unknown recipient.
  diederick@rdinformatics.co.za
    host rdinformatics-co-za.mail.protection.outlook.com [104.47.5.36]
    SMTP error from remote mail server after RCPT TO:<diederick@rdinformatics.co.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [HE1EUR02FT031.eop-EUR02.prod.protection.outlook.com]