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: angelas.supersonictravel@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) AngelaL@mqa.org.za host za-smtp-inbound-1.mimecast.co.za [41.74.193.201] 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 [ACD4MPqrO6OrrYr-ceM3Aw.za29]