We are receiving heaps of infected "undeliverable messages"
The senders are sometimes genuine - sometimes fake
Many people on our network are receiving them
They appear to be generated by our mail server - but how/why/what can we do to stop them ?
eg)
This message was created automatically by mail delivery software. Your email message was not delivered as is to the intended recipients because malware was detected in one or more attachments included with it. All attachments were deleted.
--- Additional Information ---:
Subject: Money transfer details
Sender: jcontreras@vwsjr.com.mx
Time received: 9/12/2018 7:25:25 AM
Message ID:<15394711811695819272.6409FBA2B13649AF@bucklersmeadacademy.com>
Detections found:
Lloyds Bank_Payment_Remittance_Advice_4876380.pdf PDF/Domepidief.A
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