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:

  fredvdw@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<fredvdw@mweb.co.za>:
    550 rejected because recipient verify failed -- user not found
  fredmln@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<fredmln@mweb.co.za>:
    550 rejected because recipient verify failed -- user not found
  fredissa@mweb.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<fredissa@mweb.co.za>:
    550 rejected because recipient verify failed -- user not found
  fredheg@global.co.za
    host securemail-mx3.synaq.com [196.35.198.130]
    SMTP error from remote mail server after RCPT TO:<fredheg@global.co.za>:
    550 rejected because recipient verify failed -- user not found
  Fredrick.hagenann@up.ac.za
    host aspmx.l.google.com [142.251.10.27]
    SMTP error from remote mail server after RCPT TO:<Fredrick.hagenann@up.ac.za>:
    550-5.1.1 The email account that you tried to reach does not exist. Please try
    550-5.1.1 double-checking the recipient's email address for typos or
    550-5.1.1 unnecessary spaces. Learn more at
    550 5.1.1  https://support.google.com/mail/?p=NoSuchUser z125si7536340pgb.145 - gsmtp
  fredsterones@hotmail.com
    host hotmail-com.olc.protection.outlook.com [104.47.57.161]
    SMTP error from remote mail server after pipelined end of data:
    550 5.7.1 Unfortunately, messages from [13.251.146.0] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [DM6NAM11FT061.eop-nam11.prod.protection.outlook.com]
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Date: Mon, 29 Nov 2021 14:33:31 +0800
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