Edit file File name : sendmail-buffered.conf Content :# Fail2Ban configuration file # # Author: Cyril Jaquier # # [INCLUDES] before = sendmail-common.conf [Definition] # bypass ban/unban for restored tickets norestored = 1 # Option: actionstart # Notes.: command executed on demand at the first ban (or at the start of Fail2Ban if actionstart_on_demand is set to false). # Values: CMD # actionstart = printf %%b "Subject: [Fail2Ban] <name>: started on <fq-hostname> From: <sendername> <<sender>> To: <dest>\n Hi,\n The jail <name> has been started successfully.\n Output will be buffered until <lines> lines are available.\n Regards,\n Fail2Ban" | <mailcmd> # Option: actionstop # Notes.: command executed at the stop of jail (or at the end of Fail2Ban) # Values: CMD # actionstop = if [ -f <tmpfile> ]; then printf %%b "Subject: [Fail2Ban] <name>: summary from <fq-hostname> From: <sendername> <<sender>> To: <dest>\n Hi,\n These hosts have been banned by Fail2Ban.\n `cat <tmpfile>` Regards,\n Fail2Ban" | <mailcmd> rm <tmpfile> fi printf %%b "Subject: [Fail2Ban] <name>: stopped on <fq-hostname> From: Fail2Ban <<sender>> To: <dest>\n Hi,\n The jail <name> has been stopped.\n Regards,\n Fail2Ban" | <mailcmd> # Option: actioncheck # Notes.: command executed once before each actionban command # Values: CMD # actioncheck = # Option: actionban # Notes.: command executed when banning an IP. Take care that the # command is executed with Fail2Ban user rights. # Tags: See jail.conf(5) man page # Values: CMD # actionban = printf %%b "`date`: <ip> (<failures> failures)\n" >> <tmpfile> LINE=$( wc -l <tmpfile> | awk '{ print $1 }' ) if [ $LINE -ge <lines> ]; then printf %%b "Subject: [Fail2Ban] <name>: summary from <fq-hostname> From: <sendername> <<sender>> To: <dest>\n Hi,\n These hosts have been banned by Fail2Ban.\n `cat <tmpfile>` Regards,\n Fail2Ban" | <mailcmd> rm <tmpfile> fi # Option: actionunban # Notes.: command executed when unbanning an IP. Take care that the # command is executed with Fail2Ban user rights. # Tags: See jail.conf(5) man page # Values: CMD # actionunban = [Init] # Default name of the chain # name = default # Default number of lines that are buffered # lines = 5 # Default temporary file # tmpfile = /var/run/fail2ban/tmp-mail.txt Save