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: calvin.hope@eskom.co.za host mx1.eskom.seagatestoragecloud.co.za [169.239.240.92] SMTP error from remote mail server after RCPT TO:: 550-Callout verification failed: 550 550 5.1.1 User unknown calvinmiller@tceda.com host mx1.emailsrvr.com [184.106.54.1] SMTP error from remote mail server after RCPT TO:: 550 5.1.1 : Email address could not be found, or was misspelled (G8) caltrinwalters_powcf34@blueworld.co.za host mail.blueworld.co.za [41.204.202.45] SMTP error from remote mail server after RCPT TO:: 550 Unroutable address calsi@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 calorway@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 calvin@improtech.co.za host mx1.tld-mx.com [169.239.218.2] SMTP error from remote mail server after RCPT TO:: 550 No such recipient here calvary@cybertrade.co.za all hosts for 'cybertrade.co.za' have been failing for a long time (and retry time not reached)