Hi All,

I just installed fail2ban a week ago on a new Debian server.

I have noticed that there is a dictionary attack that is in progress
against my mail server. In this case they are trying to guess the
password for finance@domain. The attempts are coming from different
IPs. I will see same IP only once per day on average. This way they
never trigger the ban. But in each connection they will perform
multiple passwords check:

... dovecot: imap-login: Disconnected (auth failed, 4 attempts in 53
secs): user=<finance@ ...

What I was thinking is that "4 attempts" should be counted as 4 instead
of as 1. Is this a feature that already exist? How easy would it be to
implement?

Regards,
K


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