> Please help. Thanks.
Check out all your log files for the mention IP address. Even
e.g. the Apache logs for all websites. Probably this IP address
was just causing some "overload" on your server, but did not try
to brute force any user accounts. So there was no reason for
fail2ban to ban anything. Just find out what was going on and
then decide what to do, e.g. tuning your server or eventually
creating a custom filter and jail for this, if it does abuse your