Brute force how to block invalid usernames for good?ing invalid logins

[Murbix]

Hi!
Today I looked into my admin messages and wow 999+ bruteforce attacks where 80% of it are login attempts to wordpress and roundcube with "[email protected]". My guess is that my server's IP was associated with somedomain1.be in the past.
Now because this is repeating over and over again I was wonderng how to deal with this issue. What I want to achieve is to immediately block user from trying to log in with username "[email protected]". Is this somehow possible?

 

[zEitEr]

Hello,

DirectAdmin does not know which username they use. So it won't block anybody who might use the username. You might try either mod_security with custom rules, or try a custom solution for RoundCube and WordPress.