Block Entire TLD through WHM

As a system administrator, I will like WHM to allow us to block all emails from entire TLDs like .ru, in the same way, that WHM 84 allows us to block emails from a domain like example.com.

This domain blocking is a very useful feature as it helps to avoid tinkering with Exim filter files. However, being able to block entire TLDs will be even more useful in blocking rogue extensions which are primarily used for spamming webmasters and make their life more challenging.