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:

  kathryn@fabians.co.za
    host fabians-co-za.mail.protection.outlook.com [104.47.9.36]
    SMTP error from remote mail server after RCPT TO:<kathryn@fabians.co.za>:
    550 5.7.51 TenantInboundAttribution; There is a partner connector configured that matched the message's recipient domain. The connector had either the RestrictDomainsToIPAddresses or RestrictDomainsToCertificate set [VE1EUR03FT064.eop-EUR03.prod.protection.outlook.com]
  kathy@bryson.co.za
    host mx1.mweb.net [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<kathy@bryson.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
  kathryns@tshwane.gov.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<kathryns@tshwane.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
  kathy@brabys.co.za
    host guardian.brabys.co.za [196.216.215.59]
    SMTP error from remote mail server after RCPT TO:<kathy@brabys.co.za>:
    550 5.1.1 <kathy@brabys.co.za>: Recipient address rejected:
    User unknown in virtual mailbox table
  kathrinemack@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<kathrinemack@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
  kathryng@thomas.co.za
    host thomas-co-za.mail.protection.outlook.com [104.47.4.36]
    SMTP error from remote mail server after RCPT TO:<kathryng@thomas.co.za>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [AM5EUR02FT031.eop-EUR02.prod.protection.outlook.com]
  kathryn.h@permark.co.za
    host mail.permark.co.za [41.169.97.44]
    SMTP error from remote mail server after RCPT TO:<kathryn.h@permark.co.za>:
    550 <kathryn.h@permark.co.za>, Recipient unknown
  kathryns@ridge.gp.school.za
    host mopani.school.za [197.157.95.68]
    SMTP error from remote mail server after RCPT TO:<kathryns@ridge.gp.school.za>:
    554 5.7.1 <kathryns@ridge.gp.school.za>: Relay access denied
  kathrinh@ridge.gp.school.za
    host mopani.school.za [197.157.95.68]
    SMTP error from remote mail server after RCPT TO:<kathrinh@ridge.gp.school.za>:
    554 5.7.1 <kathrinh@ridge.gp.school.za>: Relay access denied
  kathrine.starke@added-value.co.za
    host mxa-00174f01.gslb.pphosted.com [67.231.148.206]
    SMTP error from remote mail server after pipelined DATA:
    550 5.1.1 User Unknown
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An embedded message was scrubbed...
From: "BEN JOHNSON" <mauve-patches@sourceware.org>
Subject: WARM REGARDS
Date: Mon, 29 Nov 2021 15:07:27 +0800
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URL: <https://sourceware.org/pipermail/mauve-patches/attachments/20211129/3dff8266/attachment-0001.eml>