[CentOS] denyhosts

Hi,

My denyhosts stop working. How do i check why isnt it working anymore for 
me?

Thanks

Oct  2 22:59:17 beyond sshd[15690]: Failed password for root from 
221.7.37.142 port 49836 ssh2
Oct  2 22:59:17 beyond sshd[15692]: Received disconnect from 221.7.37.142: 
11: Bye Bye
Oct  2 22:59:18 beyond sshd[15701]: pam_unix(sshd:auth): authentication 
failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.7.37.142  user=root
Oct  2 22:59:20 beyond sshd[15701]: Failed password for root from 
221.7.37.142 port 50929 ssh2
Oct  2 22:59:20 beyond sshd[15702]: Received disconnect from 221.7.37.142: 
11: Bye Bye
Oct  2 22:59:22 beyond sshd[15706]: pam_unix(sshd:auth): authentication 
failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.7.37.142  user=root
Oct  2 22:59:24 beyond sshd[15706]: Failed password for root from 
221.7.37.142 port 51911 ssh2
Oct  2 22:59:24 beyond sshd[15707]: Received disconnect from 221.7.37.142: 
11: Bye Bye
Oct  2 22:59:30 beyond sshd[15718]: pam_unix(sshd:auth): authentication 
failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.7.37.142  user=root
Oct  2 22:59:32 beyond sshd[15718]: Failed password for root from 
221.7.37.142 port 52741 ssh2
Oct  2 22:59:32 beyond sshd[15719]: Received disconnect from 221.7.37.142: 
11: Bye Bye
Oct  2 22:59:33 beyond sshd[15724]: pam_unix(sshd:auth): authentication 
failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.7.37.142  user=root
Oct  2 22:59:36 beyond sshd[15724]: Failed password for root from 
221.7.37.142 port 54591 ssh2
Oct  2 22:59:36 beyond sshd[15725]: Received disconnect from 221.7.37.142: 
11: Bye Bye
Oct  2 22:59:41 beyond sshd[15735]: pam_unix(sshd:auth): authentication 
failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.7.37.142  user=root