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: dean@volt.co.za host thecleaner2.voltdns.com [45.63.10.159] SMTP error from remote mail server after RCPT TO:: 550-5.1.1 : Recipient address rejected: undeliverable address: host mail.volt.co.za[162.244.92.16] said: 550 No such recipient here (in reply to RCPT TO command) 550 5.1.1 For assistance, see http://www.220.com.au or contact your administrator. Please provide the following information in your problem report: Time: (Nov 29 06:26:00), Client: (13.251.164.127), Server: (thecleaner2.voltdns.com). dean.zaske@prodigy.net host al-ip4-mx-vip1.prodigy.net [144.160.235.143] SMTP error from remote mail server after RCPT TO:: 550 5.2.1 ... Addressee unknown, relay=[13.251.164.127] Dean.Chapman@westerncape.gov.za host westerncape-gov-za.mail.protection.outlook.com [104.47.9.36] SMTP error from remote mail server after RCPT TO:: 550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [VE1EUR03FT003.eop-EUR03.prod.protection.outlook.com] dean@fishonline.co.za host mail.fishonline.co.za [196.40.97.13] SMTP error from remote mail server after RCPT TO:: 550 Unroutable address Dean@edgetec.co.za host d214055.a.ess.uk.barracudanetworks.com [18.133.136.186] SMTP error from remote mail server after end of data: 550 permanent failure for one or more recipients (dean@edgetec.co.za:blocked) deafsa@deafsa.co.za host deafsa-co-za.mail.protection.outlook.com [104.47.10.36] SMTP error from remote mail server after RCPT TO:: 550 5.4.1 Recipient address rejected: Access denied. AS(201806281) [DB5EUR03FT004.eop-EUR03.prod.protection.outlook.com]