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:

  hotelschool@icon.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<hotelschool@icon.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
  hotchile@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<hotchile@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
  hotflcaricf@uol.com
    host mx-p1.uol.com.br [200.147.35.219]
    SMTP error from remote mail server after RCPT TO:<hotflcaricf@uol.com>:
    550 5.1.1 <hotflcaricf@uol.com>: Recipient address rejected:
    User unknown in virtual alias table
  hotelex201502@ebizchina.net
    host mx.zoho.com [136.143.191.44]
    SMTP error from remote mail server after RCPT TO:<hotelex201502@ebizchina.net>:
    550 5.1.1 <hotelex201502@ebizchina.net> User unknown
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From: "BEN JOHNSON" <mauve-patches@sourceware.org>
Subject: WARM REGARDS
Date: Mon, 29 Nov 2021 14:42:54 +0800
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URL: <https://sourceware.org/pipermail/mauve-patches/attachments/20211129/8567c0c4/attachment-0001.eml>