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Old 30th August 2012, 07:48
snowweb snowweb is offline
Join Date: Dec 2010
Posts: 32
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Default Configuring fail2ban for Roundcube

I'm trying to set up fail2ban for Roundcube 0.8.1 which is the latest version.

I've found several instructions for earlier versions of Roundcube like this one, but the log format used back then seems to be a lot different to mine.

This is what I have and what is happening:

in /etc/fail2ban/jail.conf
enabled  = true
port     = http,https
filter   = roundcube
action   = iptables-multiport[name=roundcube, port="http,https"]
logpath  = /var/log/roundcubemail/errors
maxretry = 2
ignoreip =
in /etc/fail2ban/filter.d/roundcube.conf
failregex = IMAP Error: Login failed for .* from <HOST>
ignoreregex =
in /var/log/roundcubemail/errors I see
[30-Aug-2012 12:18:01 +0800]: IMAP Error: Login failed for from AUTHENTICATE PLAIN: Authentication failed. in /var/www/html/shared/roundcubemail-0.8.1/program/include/rcube_imap.php on line 191 (POST /?_task=login&_action=login)
in /var/log/fail2ban.log I get
2012-08-30 12:18:02,466 fail2ban.filter : WARNING Unable to find a corresponding IP address for
Now I guess the problem is the 'failregex' line of roundcube.conf, but regex isn't something I'm good at. Please can someone tell me what I need on that line?

Many thanks.

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