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: edaware@sli.wcape.gov.za all hosts for 'sli.wcape.gov.za' have been failing for a long time (and retry time not reached) ed.zabrensky@trw.com host trw-com.mail.protection.outlook.com [104.47.59.138] SMTP error from remote mail server after RCPT TO:: 550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [DM6NAM12FT004.eop-nam12.prod.protection.outlook.com] ed@nzg.ac.za host nzg-ac-za.mail.protection.outlook.com [104.47.2.36] SMTP error from remote mail server after RCPT TO:: 550 5.7.51 TenantInboundAttribution; There is a partner connector configured that matched the message's recipient domain. The connector had either the RestrictDomainsToIPAddresses or RestrictDomainsToCertificate set [DB5EUR01FT051.eop-EUR01.prod.protection.outlook.com] ed.zack@rmawi.com all hosts for 'rmawi.com' have been failing for a long time (and retry time not reached) edb@ilink.nis.za Unrouteable address