What's the NS method for blocking TLD in the email filter?

[fasttech]

omg…

Blocking email at the tld

NethServer Version: 7.6 Module: mail, rspamd the .top domain spam is getting annoying at hundreds per day, when I try to add .top or *.top to the ‘block from’ an error is thrown that it’s not an email address or host name.

I’m so stupid