[Sophos Notification] Advisory: Phish Threat Outlook plugin reporting non-campaign emails are failing to send. Sophos is actively investigating.

Hello Community,

Overview

Phish Threat Outlook plugin reporting non-campaign emails are failing to send

Impact

Reporting non-campaign emails (ie spam or actual phishing emails) through the Phish Threat Report Message add-on are not being delivered to the configured administrators.

The dialog messages from the end-user will show as the message was successfully reported.

A bounce back with the following error may be returned:

Reporting-MTA: dns; inbound-smtp.us-west-2.amazonaws.com

Arrival-Date: Wed, 27 May 20 01:25:05 UTC

Action: failed

Final-Recipient: rfc822; xxxxxxxxxxx@us-east-2.prod-inbox.staysafe.sophos.com

Original-Recipient: rfc822; xxxxxxxxxxxxxxxx@us-east-2.prod-inbox.staysafe.sophos.com

Diagnostic-Code: smtp; 451 4.3.0 This message could not be delivered due to a recipient error. Please try again later.

Status: 4.3.0

 

This KB article will be updated when more information becomes available.