I'm seeing the same issue, and on my system it consistently coincides with the Exim log file being rotated. This means that fail2ban will work until the end of the day and then needs to be restarted.
I'm seeing the same issue, and on my system it consistently coincides with the Exim log file being rotated. This means that fail2ban will work until the end of the day and then needs to be restarted.