Hi,
codespell finds many typos in /etc/fail2ban files:
./jail.conf:70: coresponding ==> corresponding
./jail.conf:80: dafault ==> default
./paths-common.conf:70: overwriteable ==> overwritable
./action.d/abuseipdb.conf:26: catagories ==> categories
./action.d/abuseipdb.conf:31: Catagories ==> Categories
./action.d/nftables.conf:47: interator ==> iterator
./action.d/bsd-ipfw.conf:80: defination ==> definition
./filter.d/phpmyadmin-syslog.conf:1: fitler ==> filter
./filter.d/mysqld-auth.conf:1: unsuccesful ==> unsuccessful
./filter.d/mongodb-auth.conf:1: unsuccesfull ==> unsuccessful
./filter.d/mongodb-auth.conf:26: nunber ==> number
./filter.d/proftpd.conf:1: fitler ==> filter
./filter.d/exim-spam.conf:47: defination ==> definition
./filter.d/traefik-auth.conf:8: specifiy ==> specify
./filter.d/selinux-ssh.conf:22: messsage ==> message
./filter.d/exim.conf:46: defination ==> definition
./filter.d/exim.conf:49: vulnerabilty ==> vulnerability
(I've removed the incorrect suggested corrections.)