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: christineb.normanbeeson@galileosa.co.za host mail-gw2.pccc.co.za [3.64.82.161] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 : Recipient address rejected: undeliverable address: host 196.22.216.144[196.22.216.144] said: 550 5.1.1 : Recipient address rejected: User unknown in virtual mailbox table (in reply to RCPT TO command) christinek@gwk.co.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after RCPT TO:: 550 sip.invaluement.mimecast.org Blocked by ivmSIP and/or ivmSIP/24 - see https://www.invaluement.com/lookup/?item=52.221.55.32. - https://community.mimecast.com/docs/DOC-1369#550 [9AKHr1WRO-iPdT3AyYOskQ.za109] christinemd@mweb.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 52.221.55.32 is in a black list at combined.abusix.dnsbl 550 https://lookup.abusix.com/search?q=52.221.55.32 christinecoetzee@mweb.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 52.221.55.32 is in a black list at combined.abusix.dnsbl 550 https://lookup.abusix.com/search?q=52.221.55.32 christinebu@mweb.co.za host securemail-mx3.synaq.com [196.35.198.130] SMTP error from remote mail server after RCPT TO:: 550-rejected because 52.221.55.32 is in a black list at combined.abusix.dnsbl 550 https://lookup.abusix.com/search?q=52.221.55.32 christinf.schlfy@ntlworld.com host mx.tb.ukmail.iss.as9143.net [212.54.56.11] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 MXIN501 mailbox christinf.schlfy@ntlworld.com unknown ;id=rZrmmQyZtT8M4rZromXPK1;sid=rZrmmQyZtT8M4;mta=mx10.tb;d=20211129;t=071020[CET];ipsrc=52.221.55.32; christinem@ananzi.co.za host mx.cloudafrica.email [41.79.76.130] SMTP error from remote mail server after RCPT TO:: 550 5.7.1 Service unavailable; client [52.221.55.32] blocked using b.barracudacentral.org christinee@unihold.co.za host protection-01.dotnetwork.co.za [154.66.66.163] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 User unknown christine_c.zak@roche.com host rkamtaext01.roche.com [198.21.20.189] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 ... User unknown christinem@aviation.denel.co.za all hosts for 'aviation.denel.co.za' have been failing for a long time (and retry time not reached) christine.zangari@wilderness.org host wilderness-org.mail.protection.outlook.com [104.47.55.138] SMTP error from remote mail server after RCPT TO:: 550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [BN8NAM12FT048.eop-nam12.prod.protection.outlook.com] christineg@enslinskby.co.za host cluster1.eu.messagelabs.com [85.158.142.97] SMTP error from remote mail server after RCPT TO:: 550-Invalid recipient 550 (#5.1.1) christinejr@wizard.za.com host madelaine.teqcle.co.za [129.232.179.245] SMTP error from remote mail server after RCPT TO:: 554 5.7.1 Service unavailable; Client host [52.221.55.32] blocked using b.barracudacentral.org; http://www.barracudanetworks.com/reputation/?pr=1&ip=52.221.55.32 Christine_Arendse@wbho.co.za host mail1.wbho.co.za [13.232.247.165] SMTP error from remote mail server after RCPT TO:: 554 5.7.1 Service unavailable; Client host [52.221.55.32] blocked using sip.invaluement.local; Blocked by ivmSIP and/or ivmSIP/24 - see https://www.invaluement.com/lookup/?item=52.221.55.32