fail2ban/config/action.d/mail-whois-common.conf

# Fail2Ban configuration file
#
# Common settings for mail actions
#
# Users can override the defaults in mail-whois-common.local

[INCLUDES]

# Load customizations if any available
after = mail-whois-common.local

[DEFAULT]
#original character set of whois output will be sent to mail program
_whois = whois <ip> || echo "missing whois program"

# use heuristics to convert charset of whois output to a target
# character set before sending it to a mail program
# make sure you have 'file' and 'iconv' commands installed when opting for that
_whois_target_charset = UTF-8
_whois_convert_charset = (%(_whois)s) |
                         { WHOIS_OUTPUT=$(cat) ; WHOIS_CHARSET=$(printf %%b "$WHOIS_OUTPUT" | file -b --mime-encoding -) ; printf %%b "$WHOIS_OUTPUT" | iconv -f $WHOIS_CHARSET -t %(_whois_target_charset)s//TRANSLIT - ; }

# choose between _whois and _whois_convert_charset in mail-whois-common.local
# or other *.local which include mail-whois-common.conf.
_whois_command = %(_whois)s
#_whois_command = %(_whois_convert_charset)s

[Init]