Stop the Denyhosts service
/etc/init.d/denyhosts stop
Remove your IP from the log file
vi /etc/hosts.deny
(Look for your IP then “dd” on the line to remove it, then “ZZ” to save and exit)
Check to see if your IP is in any other files
grep "82.68.113.238" /var/lib/denyhosts/*
Start the Denyhosts service again
/etc/init.d/denyhosts start
Adapted from the following post : DenyHosts: Remove / Delete an IP address