Blocking emails with zip attachments

I found several (old) threads on how to reject emails in exim with zip attachments, for example;

1) Use /etc/system_filter.exim. However that file doesn't exist?

2) exim_check_attachment.sh from Easy Spam Fighter

3) Add zip extension to /etc/exim.clamav.conf in demime option, however that option has been deprecated and removed in the latest exim version.

I'm now wondering: what is currently the best method with the latest exim.conf, ESF & exim version to reject emails with .zip attachments?

Hello,

The file /etc/system_filter.exim should exist, and I'd rather use it.