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: kamillah_jardifn.uip@uip.com host eu-smtp-inbound-2.mimecast.com [91.220.42.201] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [AgqDZB8ROjiO4g_h2BOWig.uk225] kampscb@mweb.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 kamleshn@mweb.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 kamiter@global.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 kamlanai@ialch.co.za host mail.ialch.co.za [160.226.155.108] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 ... User unknown kaminin@formax.co.za host formax-co-za.mail.protection.outlook.com [104.47.8.36] SMTP error from remote mail server after RCPT TO:: 550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [AM5EUR03FT022.eop-EUR03.prod.protection.outlook.com] kammandonek.harties@gmail.com host gmail-smtp-in.l.google.com [74.125.24.26] 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 c10si17036028plc.62 - gsmtp Kamini.NAIDOO@danone.com host mxa-000f8e02.gslb.pphosted.com [143.55.144.8] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 User Unknown kamillahs@discovery.co.za host za-mx.discovery.co.za [196.6.208.51] SMTP error from remote mail server after RCPT TO:: 550 #5.1.0 Address rejected. kaminig@permark.co.za host mail.permark.co.za [41.169.97.44] SMTP error from remote mail server after RCPT TO:: 550 , Recipient unknown kamin.taute@wpk.co.za all hosts for 'wpk.co.za' have been failing for a long time (and retry time not reached)