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: Carboxyl@global.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.245.207 is in a black list at 550-b.barracudacentral.org 550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207 carbotech@mweb.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.245.207 is in a black list at 550-b.barracudacentral.org 550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207 caravell@mweb.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.245.207 is in a black list at 550-b.barracudacentral.org 550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207 caravel@mweb.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.245.207 is in a black list at 550-b.barracudacentral.org 550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207 caravill@iafrica.com host nav-gateway.mweb.co.za [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.245.207 is in a black list at 550-b.barracudacentral.org 550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207 caraveli@iafrica.com host nav-gateway.mweb.co.za [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.245.207 is in a black list at 550-b.barracudacentral.org 550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207 carda@ndot.pwv.gov.za host securemail-mx2.synaq.com [196.35.198.158] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.245.207 is in a black list at 550-b.barracudacentral.org 550 http://www.barracudanetworks.com/reputation/?pr=1&ip=13.251.245.207 CARD.READ@KPMG.CO.ZA host mxa-00120b02.gslb.pphosted.com [67.231.156.124] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 User Unknown carccihhfr@msn.com host msn-com.olc.protection.outlook.com [104.47.56.161] SMTP error from remote mail server after RCPT TO:: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). card@cgbchina.com.cn host edge3.cgbchina.com.cn [218.13.11.4] SMTP error from remote mail server after pipelined MAIL FROM: SIZE=3542: 550 5.7.1 : Sender address rejected: Service unavailable; SPF check failed and transaction closed due to the organization's policy. carcara@cmorton.com all hosts for 'cmorton.com' have been failing for a long time (and retry time not reached)