i would like to block IP address with fail2ban if in postfix mail log is line:
SSL_accept error from unknown[xxx.xxx.xxx.xxx]: lost connection
i try make fail2ban ssl_error.conf in filter.d with this line:
failregex = ^%(__prefix_line)sSSL_accept error from \S+\s*\[<HOST>\]: lost connection$
but no luck :(
Get rid of the
^%(__prefix_line)s
part. Simply set