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  dryair@iafrica.com
    host nav-gateway.mweb.co.za [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<dryair@iafrica.com>:
    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
  drwilliams@werksmans.com
    host za-smtp-inbound-1.mimecast.co.za [41.74.197.210]
    SMTP error from remote mail server after RCPT TO:<drwilliams@werksmans.com>:
    550 sip.invaluement.mimecast.org Blocked by ivmSIP and/or ivmSIP/24 - see https://www.invaluement.com/lookup/?item=52.221.55.32. - https://community.mimecast.com/docs/DOC-1369#550 [DNGGECOlM86_DsGOHKEG3Q.za8]
  drury@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<drury@mweb.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
  drw@reklaw.co.za
    host mx1.tld-mx.com [169.239.218.2]
    SMTP error from remote mail server after RCPT TO:<drw@reklaw.co.za>:
    550 No Such User Here
  drwaing2@jwce.co.za
    host jwce-co-za.mail.protection.outlook.com [104.47.5.36]
    SMTP error from remote mail server after RCPT TO:<drwaing2@jwce.co.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [HE1EUR02FT051.eop-EUR02.prod.protection.outlook.com]
  drums_thorn@hotmail.com
    host hotmail-com.olc.protection.outlook.com [104.47.66.33]
    SMTP error from remote mail server after RCPT TO:<drums_thorn@hotmail.com>:
    550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302).