How to block emails with double brackets

[davidemiccone]

I receive emails from addresses like (for example my company is "Proxmox") with Word attachments

Proxmox Company <davide@proxmox.it> <misa@misa.com.ar>

How can I intercept the double < xxxxxxxxxxx > ??

My colleagues are deceived from this stupid form of spam.

What is the way to block this types of emails?

 

[Deraj_53]

We've gotten a few of these too.
I've added the following to my installation.

Under Mail Filter > What Objects

1. Add a Match Field entry
Field: from
Value: .*<.*>.*<.*>$

2. Create a new filter rule based around it.

Testing it now, I have not gotten any new ones so I can't say for sure if it works or not.