fail2ban/config/filter.d/sogo-auth.conf

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# Fail2ban filter for SOGo authentcation
#
# Log file usually in /var/log/sogo/sogo.log
[Definition]
failregex = ^ sogod \[\d+\]: SOGoRootPage Login from '<HOST>(?:,[^']*)?' for user '[^']*' might not have worked( - password policy: \d* grace: -?\d* expire: -?\d* bound: -?\d*)?\s*$
ignoreregex = "^<ADDR>"
datepattern = {^LN-BEG}%%ExY(?P<_sep>[-/.])%%m(?P=_sep)%%d[T ]%%H:%%M:%%S(?:[.,]%%f)?(?:\s*%%z)?
{^LN-BEG}(?:%%a )?%%b %%d %%H:%%M:%%S(?:\.%%f)?(?: %%ExY)?
^[^\[]*\[({DATE})
{^LN-BEG}
#
# DEV Notes:
#
# The error log may contain multiple hosts, whereas the first one
# is the client and all others are poxys. We match the first one, only
#
# Author: Arnd Brandes