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:

  desigan.naidoo@atosorigin.com
    host mx5.atos.net [80.78.5.244]
    SMTP error from remote mail server after RCPT TO:<desigan.naidoo@atosorigin.com>:
    550 #5.1.0 Address rejected.
  desertsabra@hotmail.com
    host hotmail-com.olc.protection.outlook.com [104.47.12.33]
    SMTP error from remote mail server after RCPT TO:<desertsabra@hotmail.com>:
    550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302).