[Dovecot] Fail2ban and logging

[Paul van der Vlis]

Hello,

Dovecot is logging authentication failures this way:
------
Jul 12 18:07:19 vps0 dovecot: imap-login: Disconnected (auth failed, 22
attempts in 172 secs): user=<info>, method=PLAIN, rip=82.95.148.152,
lip=1.2.3.4, TLS, session=<QylMqlLhVwBSX5SY>
------

Fail2ban is trying to catch them with this regex:
------
failregex = .*(?:pop3-login|imap-login):.*(?:Authentication
failure|Aborted login \(auth failed|Aborted login \(tried to use
disabled|Disconnected \(auth failed).*rip=(?P<host>\S*),.*
------

This way fail2ban is counting 22 attempts as 1 attempt...

I expect I need to change something on the logging, so that every
attempt is seperate logged. But I don't know how.

Is here somebody who knows how to get fail2ban correct working?

No help on this on the wiki's:
http://wiki1.dovecot.org/HowTo/Fail2Ban
http://wiki1.dovecot.org/Logging
http://www.fail2ban.org/wiki/index.php/Dovecot

With regards,
Paul van der Vlis.


-- 
Paul van der Vlis Linux systeembeheer, Groningen
http://www.vandervlis.nl/