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  jsu@rau.ac.za
    retry timeout exceeded
  jt@accessweb.co.za
    host mail.accessweb.co.za [85.10.215.97]
    SMTP error from remote mail server after RCPT TO:<jt@accessweb.co.za>:
    550 Unroutable address
  jswanepoel@bridgestone.co.za
    host bridgestone-co-za.mail.protection.outlook.com [104.47.2.36]
    SMTP error from remote mail server after RCPT TO:<jswanepoel@bridgestone.co.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [DB5EUR01FT045.eop-EUR01.prod.protection.outlook.com]
  jsu@pretorianews.co.za
    host aspmx.l.google.com [142.251.12.27]
    SMTP error from remote mail server after RCPT TO:<jsu@pretorianews.co.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 d64si9813800pgc.266 - gsmtp