Mail delivery failed: returning message to sender

[Singnet Mail Delivery System]

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:

  coslist@owl.unisa.ac.za
    host voyager-02.unisa.ac.za [192.96.2.247]
    SMTP error from remote mail server after end of data:
    554 rejected due to spam content
  cos@childrenfirst.org.za
    host mail.childrenfirst.org.za [41.203.18.6]
    SMTP error from remote mail server after RCPT TO:<cos@childrenfirst.org.za>:
    550 Unroutable address
  cosmanc@iafrica.com
    host nav-gateway.mweb.co.za [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<cosmanc@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
  cosmic.creations@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<cosmic.creations@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
  cosinc@surf.com
    all hosts for 'surf.com' have been failing for a long time (and retry time not reached)
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From: "BEN JOHNSON" <mauve-patches@sourceware.org>
Subject: WARM REGARDS
Date: Mon, 29 Nov 2021 14:10:51 +0800
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