[exim] From rewrite for incoming messages

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Author: Sujit Acharyya-Choudhury
Date:  
To: exim-users@exim.org
Subject: [exim] From rewrite for incoming messages
Is there a safe way to rewrite From field for ALL incoming messages?  We are
having problems with Phishing where recipients only see the From field and
assume it has come from a trusted person and then click on the link or
download the file.
An example is as follows:

=======================================================
From: Sujit Choudhury <mailto:englishmailer@protonmail.com>
Date: Tue, 25 Jun 2019 at 12:22
Subject: Hello
To: mailto:j.baird@bbk.ac.uk <mailto:j.baird@bbk.ac.uk>
 
Are you in the office?
Please click on the link below:


============================================================================
=================================================
In this case j.baird thought, that the mail came from me, and like many
people reading their mails on phone, only the first part of the From field
is visible.




Regards

Sujit

Sujit Choudhury | IT Services
Systems Administrator
Birkbeck, University of London
Tel: 020 3073 8020