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  justroofs@looking4.co.za
    host mail.looking4.co.za [129.232.249.177]
    SMTP error from remote mail server after RCPT TO:<justroofs@looking4.co.za>:
    550 Unroutable address
  juston3@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<juston3@mweb.co.za>:
    550-rejected because 13.251.245.207 is in a black list at combined.abusix.dnsbl
    550 https://lookup.abusix.com/search?q=13.251.245.207
  justjam@netactive.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<justjam@netactive.co.za>:
    550-rejected because 13.251.245.207 is in a black list at combined.abusix.dnsbl
    550 https://lookup.abusix.com/search?q=13.251.245.207
  justruthy@mail.com
    host mx00.mail.com [74.208.5.20]
    SMTP error from remote mail server after RCPT TO:<justruthy@mail.com>:
    550 Requested action not taken: mailbox unavailable
  justnuts@senwes.co.za
    host senwes-co-za.mail.protection.outlook.com [104.47.2.36]
    SMTP error from remote mail server after RCPT TO:<justnuts@senwes.co.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [DB5EUR01FT035.eop-EUR01.prod.protection.outlook.com]