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: jd609@sf-express.com host eMX1.sf-express.com [14.215.129.12] SMTP error from remote mail server after RCPT TO:: 554-Service unavailable; Client host [omr21.orchid.atmailcloud.com] blocked using 554-Barracuda Reputation; 554 http://www.barracudanetworks.com/reputation/?r=1&ip=52.221.55.32 jcwmeyer@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 JCVP@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 JCvdMerwe@distell.co.za host za-smtp-inbound-2.mimecast.co.za [41.74.197.210] 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 [6fcLIvrmOjmBHsS-Qjigaw.za32] jdanifl@uccplc.co.uk host aspmx.l.google.com [142.250.4.27] 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 p10si16098838pff.295 - gsmtp jdair@njcc.com host mx.njcc.com.cust.b.hostedemail.com [64.98.36.4] SMTP error from remote mail server after RCPT TO:: 554 5.7.1 : Recipient address rejected: user jdair@njcc.com does not exist jda8823@sbcglobal.net host ff-ip4-mx-vip1.prodigy.net [144.160.159.21] SMTP error from remote mail server after RCPT TO:: 550 5.2.1 ... Addressee unknown, relay=[52.221.55.32] jdalrymple@swin.edu.au host au-smtp-inbound-2.mimecast.com [103.13.69.26] 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 [HOjslQC8NNGlF9NeQd3E8g.au53] jda@rau.ac.za all hosts for 'rau.ac.za' have been failing for a long time (and retry time not reached) jd@xprocure.co.za all hosts for 'xprocure.co.za' have been failing for a long time (and retry time not reached)