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: mvisser@hiddingh.uct.ac.za host za-smtp-inbound-2.mimecast.co.za [41.74.197.201] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [rJgW3qLjNW2imVWbVKQ8-g.za52] stevec@umgeni.co.za host za-smtp-inbound-2.mimecast.co.za [41.74.197.201] SMTP error from remote mail server after end of data: 554 Email rejected due to security policies - https://community.mimecast.com/docs/DOC-1369#554 [rJgW3qLjNW2imVWbVKQ8-g.za52] johnl@age.uct.ac.za host za-smtp-inbound-2.mimecast.co.za [41.74.197.201] SMTP error from remote mail server after end of data: 554 Email rejected due to security policies - https://community.mimecast.com/docs/DOC-1369#554 [rJgW3qLjNW2imVWbVKQ8-g.za52] Belinda.Dupreez@corobrik.co.za host za-smtp-inbound-2.mimecast.co.za [41.74.197.201] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [rJgW3qLjNW2imVWbVKQ8-g.za52] wikusl@mgb.org.za host za-smtp-inbound-2.mimecast.co.za [41.74.197.201] SMTP error from remote mail server after end of data: 554 Email rejected due to security policies - https://community.mimecast.com/docs/DOC-1369#554 [rJgW3qLjNW2imVWbVKQ8-g.za52] ziphom@etdpseta.org.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [94scUbL1MNShvxoycY4EJQ.za81] wwsliv@woolworths.co.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [94scUbL1MNShvxoycY4EJQ.za81] vusih@gpg.gov.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after end of data: 554 Email rejected due to security policies - https://community.mimecast.com/docs/DOC-1369#554 [94scUbL1MNShvxoycY4EJQ.za81] timp@incredible.co.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [94scUbL1MNShvxoycY4EJQ.za81] verona@wylie.co.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [94scUbL1MNShvxoycY4EJQ.za81] vall@solutio.co.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [94scUbL1MNShvxoycY4EJQ.za81] trevors@ate.co.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [94scUbL1MNShvxoycY4EJQ.za81] unathi.kondile@uct.ac.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.210] SMTP error from remote mail server after RCPT TO:: 550 Invalid Recipient - https://community.mimecast.com/docs/DOC-1369#550 [94scUbL1MNShvxoycY4EJQ.za81] vonny@ispca.co.za host mx.inbound.vox.co.za [41.193.119.123] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 ... User unknown