No partial match blocking in a Help Support Ticket Spam Control - how to enable it?

[postcd]

Issue:

WHMCS developers apparently failed with their "Support Ticket Spam Control" feature, since it fails to block most of the SPAM in WHMCS 6.3.2.

When I enter blocked email:

mail.ru

@mail.ru

*@mail.ru

spam from spammers like  asnecant1980@mail.ru still goes through/is submitted, obviously spammers can generated unlimited email variations so blocking whole addresses is most often pointless.

And it is not only about emails, but "phrases" blocking has same problem.

Question: please which file to to edit and what to replace by what so it start working in partial match mode?

Edited July 30 by postcd

[postcd]

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