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: ambrociusa@kheis.co.za host kheis.co.za [102.130.117.137] SMTP error from remote mail server after RCPT TO:: 550 No Such User Here amc@cbsgroup.co.za host mail.cbsgroup.co.za [188.40.0.242] SMTP error from remote mail server after RCPT TO:: 550 Unroutable address ambula@mweb.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.197.89 is in a black list at combined.abusix.dnsbl 550 https://lookup.abusix.com/search?q=13.251.197.89 ambrosia@polka.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.197.89 is in a black list at combined.abusix.dnsbl 550 https://lookup.abusix.com/search?q=13.251.197.89 ambrosia@mweb.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 13.251.197.89 is in a black list at combined.abusix.dnsbl 550 https://lookup.abusix.com/search?q=13.251.197.89 ambusch@cs.sun.ac.za host cs-sun-ac-za.mail.protection.outlook.com [104.47.9.36] SMTP error from remote mail server after RCPT TO:: 550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [VE1EUR03FT045.eop-EUR03.prod.protection.outlook.com] ambrose@vut.ac.za host vut-ac-za.mail.protection.outlook.com [104.47.2.36] SMTP error from remote mail server after RCPT TO:: 550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [DB5EUR01FT042.eop-EUR01.prod.protection.outlook.com] ambuli@barloworld-equipment.co.za all hosts for 'barloworld-equipment.co.za' have been failing for a long time (and retry time not reached)