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AS(201806281) [AM5EUR02FT060.eop-EUR02.prod.protection.outlook.com] postmaster@tahiti.cyberserv.co.za host tahiti.cyberserv.co.za [169.239.217.28] SMTP error from remote mail server after RCPT TO:: 550-Please turn on SMTP Authentication in your mail client. 550-omr02.orchid.atmailcloud.com [13.251.164.127]:56714 is not permitted to 550 relay through this server without authentication. wlundall@hotmail.co.za host eur.olc.protection.outlook.com [104.47.6.33] SMTP error from remote mail server after RCPT TO:: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). zenzele@saol.co.za host mail.saol.co.za [143.95.159.228] SMTP error from remote mail server after RCPT TO:: 550 No Such User Here wasiemaa@nolands.co.za host zalj.e-purifier.com [41.168.2.5] SMTP error from remote mail server after RCPT TO:: 554 5.7.1 : Recipient address rejected: Access denied tando@mail.co.za all hosts for 'mail.co.za' have been failing for a long time (and retry time not reached) vanesh@discoverymail.co.za host pinpoint-mx3.synaq.com [196.35.198.158] SMTP error from remote mail server after RCPT TO:: 550 rejected because recipient verify failed -- user not found josephm@gecko.biol.wits.ac.za all hosts for 'gecko.biol.wits.ac.za' have been failing for a long time (and retry time not reached) wtrkal@mail.uct.ac.za all hosts for 'mail.uct.ac.za' have been failing for a long time (and retry time not reached) vwblacksteer@yebo.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550 rejected because recipient verify failed -- user not found united@icon.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550 rejected because recipient verify failed -- user not found tshidim@eclipse.co.za all hosts for 'eclipse.co.za' have been failing for a long time (and retry time not reached) rondebosch@imperial.ih.co.za host imperial-ih-co-za.mail.protection.outlook.com [104.47.6.36] SMTP error from remote mail server after RCPT TO:: 550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [VE1EUR02FT047.eop-EUR02.prod.protection.outlook.com] trudy@vitrex.co.za host mail.vitrex.co.za [41.203.18.69] SMTP error from remote mail server after RCPT TO:: 550 Unroutable address ihlf@giraffe.ru.ac.za all hosts for 'giraffe.ru.ac.za' have been failing for a long time (and retry time not reached) yduplessis@wesbank.co.za host mx2.hc858-6.c3s2.iphmx.com [216.71.156.58] SMTP error from remote mail server after RCPT TO:: 550 #5.1.0 Address rejected. urte.schluter@fabi.up.ac.za host alt2.aspmx.l.google.com [142.250.115.27] 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. 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