No way to prevent backscatter in cPanel/WHM

Chuckee

New Email
It appears that there is now no way to make cPanel/WHM reject emails sent to invalid recipients at the SMTP level, in order to prevent backscatter spam from being sent out.

In previous versions, the following solution could be used:
Exim: correct setup to verify recipient?

But now, it says 'endpass' is not recognized anymore.

Anyone know how to prevent backscatter in cPanel now, other than simply directing the email to a blackhole?
 
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