fail2ban filter for ical regex

i am trying to get a regex for an ical service on my host working without success. This is a part of the logfile:

Tue Jul 23 13:55:23 2019: ical|T720] [info   ] Accepted connection from [::ffff:2.3.4.5]:56450
Tue Jul 23 13:55:23 2019: [net/[::ffff:5.6|T5234] [error  ] HrLogon server "http://localhost:123/" user "Admin": logon failed   
Tue Jul 23 13:55:23 2019: [net/[::ffff:5.6|T5234] [warning] Login failed (0x80040111 logon failed), resending authentication request   
Tue Jul 23 13:55:23 2019: [net/[::ffff:5.6|T5234] [notice ] [::ffff:5.61.48.194]:56450 - Admin [23/Jul/2019:13:55:23 +0200] "GET / HTTP/1.1" 401 0 "-" "Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1"   
Tue Jul 23 13:55:23 2019: [net/[::ffff:5.6|T5234] [info   ] Connection closed

This is the part of the log file and i tried already different things to get this into a filter. The important parts are "Login failed" and in the next line the part with the IP. But how can i get this working? Any help would be great!!!

Thanks in advance

icey

Actual configs looking like: ical.conf:

[INCLUDES]
before = common.conf

[Definition]

failregex = ^*Login failed\n^.*\[notice \] \[::ffff:<HOST>\]$

ignoreregex =
[Init]
maxlines = 2

and the jail conf:

[ical]

enabled = false
port = 8443
filter = kopano-ical
logpath = /var/log/ical.log
maxtetry = 3
bantime = 3600

I believe your regex is not correct. You're missing dot (.) at the beginning right after ^, .* before \n and since you used $ and the end you need to put .* before $, ] is not the last character.

failregex = ^.*Login failed.*\n^.*\[notice \] \[::ffff:<HOST>\].*$