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: aisha.m@amc-intsa.com host amc-intsa.com [192.185.39.31] SMTP error from remote mail server after RCPT TO:: 550 No Such User Here" aissak@up.ac.mz host mail.up.ac.mz [196.3.99.99] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 : Recipient address rejected: User unknown aishu_picses@hotmail.com host hotmail-com.olc.protection.outlook.com [104.47.73.33] SMTP error from remote mail server after pipelined end of data: 503 5.5.2 Need rcpt command [DM6NAM04FT030.eop-NAM04.prod.protection.outlook.com] aisha_feisal@hotmail.com host hotmail-com.olc.protection.outlook.com [104.47.73.33] SMTP error from remote mail server after RCPT TO:: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). aitinvest@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 Airportgerald@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 airpoetsteel@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 airwolf@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 airvent.co.zadevoted@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 aishah@hzncars.com.my host mailx.hzncars.com.my [210.1.225.8] SMTP error from remote mail server after RCPT TO:: 550 13.251.245.207 blacklisted at b.barracudacentral.org airport.pickup@monash.edu host ASPMX.L.GOOGLE.COM [74.125.130.27] SMTP error from remote mail server after RCPT TO:: 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 r143si18274630pfc.190 - gsmtp