This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  klette@acenet.co.za
    host protection-01.dotnetwork.co.za [154.66.66.164]
    SMTP error from remote mail server after end of data:
    550 High probability of spam
  klienberg@hexvallei.co.za
    host mail.hexvallei.co.za [197.242.67.186]
    SMTP error from remote mail server after RCPT TO:<klienberg@hexvallei.co.za>:
    550 Unroutable address
  kliebenberg@lgr.co.za
    host cluster1.eu.messagelabs.com [85.158.142.106]
    SMTP error from remote mail server after RCPT TO:<kliebenberg@lgr.co.za>:
    550 Invalid recipient <kliebenberg@lgr.co.za> (#5.1.1)
  klfohfor@iafrica.com
    host nav-gateway.mweb.co.za [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<klfohfor@iafrica.com>:
    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
  kliberatore@lighthouseplacement.com
    host lighthouseplacement-com.mail.protection.outlook.com [104.47.73.10]
    SMTP error from remote mail server after RCPT TO:<kliberatore@lighthouseplacement.com>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [DM6NAM04FT021.eop-NAM04.prod.protection.outlook.com]
  kletrsholo@ncpg.gov.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<kletrsholo@ncpg.gov.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
  klerk@atcorp.co.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<klerk@atcorp.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
  kletoaba@icloud.com
    host mx02.mail.icloud.com [17.57.154.7]
    SMTP error from remote mail server after pipelined end of data:
    554 5.7.1 [CS01] Message rejected due to local policy. Please visit https://support.apple.com/en-us/HT204137
  klerksdorp@voith.co.za
    host mail10.voith.com [193.169.205.222]
    SMTP error from remote mail server after RCPT TO:<klerksdorp@voith.co.za>:
    550 #5.1.0 Address rejected.
  klerksdorp@senwes.co.za
    host senwes-co-za.mail.protection.outlook.com [104.47.1.36]
    SMTP error from remote mail server after RCPT TO:<klerksdorp@senwes.co.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [VE1EUR01FT004.eop-EUR01.prod.protection.outlook.com]
  klerksdorp@3dmarketing.co.za
    all hosts for '3dmarketing.co.za' have been failing for a long time (and retry time not reached)