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:

  evo@saol.com
    host saol.com [196.41.123.34]
    SMTP error from remote mail server after RCPT TO:<evo@saol.com>:
    550 No such person at this address."
  ewatridge@ananzi.co.za
    host mx.cloudafrica.email [41.79.76.130]
    SMTP error from remote mail server after RCPT TO:<ewatridge@ananzi.co.za>:
    550 5.7.1 Service unavailable; client [13.251.245.207] blocked using b.barracudacentral.org
  ewanblad@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<ewanblad@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
  Ewaldm@yebo.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<Ewaldm@yebo.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
  evros@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<evros@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
  evol@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<evol@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
  evolution@evolution-co.za.net
    host mail.evolution-co.za.net [41.0.5.110]
    SMTP error from remote mail server after RCPT TO:<evolution@evolution-co.za.net>:
    550 E-Mail Rejected - Recipient Verify Failed - User Not Found
  Ewa.CZAJKOWSKA@agrana.com
    host agrana-com.mail.protection.outlook.com [104.47.6.36]
    SMTP error from remote mail server after RCPT TO:<Ewa.CZAJKOWSKA@agrana.com>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [VE1EUR02FT034.eop-EUR02.prod.protection.outlook.com]
  evrdin001@mail.uct.ac.za
    all hosts for 'mail.uct.ac.za' 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 14:31:28 +0800
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