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:

  fanaus@nourganic.co.za
    host mx2188695.spe.ucebox.co.za [41.76.215.28]
    SMTP error from remote mail server after RCPT TO:<fanaus@nourganic.co.za>:
    550 No Such User Here"
  famsmit@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<famsmit@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
  famsadbn@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<famsadbn@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
  famsa@global.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<famsa@global.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
  famspol@fidelitysecurity.co.za
    host za-smtp-inbound-1.mimecast.co.za [41.74.197.210]
    SMTP error from remote mail server after RCPT TO:<famspol@fidelitysecurity.co.za>:
    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 [X3A2XI_rOMC36qlDpr4Ndg.za118]
  Famsa.vaaldriehoek@eject.co.za
    host mailguard6.neotel.co.za [41.168.2.5]
    SMTP error from remote mail server after RCPT TO:<Famsa.vaaldriehoek@eject.co.za>:
    554 5.7.1 Service unavailable; Client host [52.221.55.32] blocked using sip.invaluement.local; Blocked by ivmSIP and/or ivmSIP/24 - see https://www.invaluement.com/lookup/?item=52.221.55.32
  famsanelspruit@vodamail.co.za
    host mx1.vodamail.co.za [196.11.146.148]
    SMTP error from remote mail server after RCPT TO:<famsanelspruit@vodamail.co.za>:
    550 5.1.1 <famsanelspruit@vodamail.co.za>: Recipient address rejected:
    User unknown in local recipient table
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From: "BEN JOHNSON" <mauve-patches@sourceware.org>
Subject: WARM REGARDS
Date: Mon, 29 Nov 2021 14:31:57 +0800
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