Filter Incoming Emails - can we filter by specific users in WHM ?

[WorkinOnIt]

I love the "Filter Incoming Emails by Domain" feature - as we can eliminate known spammers from contacting all the users in our server.

However, we still have a problem with some spammers using @gmail or @hotmail addresses.

Just recently, I had one spammer who had somehow managed to work out many of the accounts on the server - and sent the same spammy SEO message to multiple accounts - the user's email was @gmail.com

Obviously I don't want to block the domain @gmail - but is there a way to block specific email addresses from within WHM ? I know I can do this on a per-account basis, but I want to do it on a global level.

Thank you.

 

[WorkinOnIt]

I came across the Exim file - antivirus.exim (see this post)

Is this still a recommended method to potentially block mails on a global level (either by sender, or by subject / keywords) ?

 

[cPRex]

Hey there! As you've found, you'd likely need to manually create a custom filter. I wouldn't recommend modifying that file directly, but instead use the details outlined here to make those changes in a way that won't be overwritten by cPanel or future updates:

How to Customize the Exim System Filter File | cPanel & WHM Documentation

The Exim system filter file scans messages that your server has received, but that it has not yet delivered. To add custom filter rules to your Exim configuration, you may either create custom filter rule files for Exim to include in its configuration, or create a custom Exim system filter file.

docs.cpanel.net