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:

  vanman@xsinet.co.za
    host ironport.xsinet.co.za [41.193.119.123]
    SMTP error from remote mail server after RCPT TO:<vanman@xsinet.co.za>:
    550 5.1.1 <vanman@xsinet.co.za>... User unknown
  twins@xsinet.co.za
    host ironport.xsinet.co.za [41.193.119.123]
    SMTP error from remote mail server after RCPT TO:<twins@xsinet.co.za>:
    550 5.1.1 <twins@xsinet.co.za>... User unknown
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From: "BEN JOHNSON" <mauve-patches@sourceware.org>
Subject: WARM REGARDS
Date: Mon, 29 Nov 2021 12:56:20 +0800
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