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:

  joec@gdw1.wcape.gov.za
    host securemail-mx1.synaq.com [196.35.198.158]
    SMTP error from remote mail server after RCPT TO:<joec@gdw1.wcape.gov.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
  joeannp@interwaste.co.za
    host tls.imss.mtnbusiness.co.za [196.31.215.14]
    SMTP error from remote mail server after RCPT TO:<joeannp@interwaste.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
  joeannf@interwaste.co.za
    host tls.imss.mtnbusiness.co.za [196.31.215.14]
    SMTP error from remote mail server after RCPT TO:<joeannf@interwaste.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
  joeandzoe@iafrica.com
    host nav-gateway.mweb.co.za [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<joeandzoe@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
  joed@mcmotor.co.za
    host za-smtp-inbound-2.mimecast.co.za [41.74.197.201]
    SMTP error from remote mail server after RCPT TO:<joed@mcmotor.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 [bciJNrY6N6Wz4NLXvmZCQQ.za80]
-------------- next part --------------
An embedded message was scrubbed...
From: "BEN JOHNSON" <mauve-patches@sourceware.org>
Subject: WARM REGARDS
Date: Mon, 29 Nov 2021 15:01:00 +0800
Size: 1723
URL: <https://sourceware.org/pipermail/mauve-patches/attachments/20211129/523cc991/attachment.eml>