| Server IP : 167.99.224.18 / Your IP : 216.73.216.136 Web Server : Apache/2.4.41 (Ubuntu) System : Linux wordpress-ubuntu-s-1vcpu-1gb-nyc1-01 5.4.0-216-generic #236-Ubuntu SMP Fri Apr 11 19:53:21 UTC 2025 x86_64 User : root ( 0) PHP Version : 8.0.25 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /etc/fail2ban/filter.d/ |
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# Fail2Ban filter for sendmail authentication failures
#
[INCLUDES]
before = common.conf
[Definition]
_daemon = (?:sendmail|sm-(?:mta|acceptingconnections))
__prefix_line = %(known/__prefix_line)s(?:\w{14,20}: )?
# "w{14,20}" will give support for IDs from 14 up to 20 characters long
failregex = ^%(__prefix_line)s(\S+ )?\[(?:IPv6:<IP6>|<IP4>)\]( \(may be forged\))?: possible SMTP attack: command=AUTH, count=\d+$
ignoreregex =
journalmatch = _SYSTEMD_UNIT=sendmail.service
# DEV Notes:
#
# Author: Daniel Black