[Dovecot] fail2ban

[Laurent Papier]

On Mon, 12 Aug 2013 22:50:15 +0200
Aldo Reset <aldo at placenet.org> wrote:

> hi
> 
> dovecot filter for fail2ban do not match:
> 
> dovecot: pop3-login: Aborted login (tried to use disallowed plaintext auth): user=<>, rip=67
> 
> dovecot filter:
> failregex = (?: pop3-login|imap-login): (?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed).*rip=(?P<host>\S*),.*
> 
> 
> bst regards.
> 
> 

Hi,
it would be better to send this kind of report to fail2ban mailing list.

This regex should catch your log:
failregex = .*(?:pop3-login|imap-login):.*(?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed|Aborted login \(tried to use disallowed plaintext auth).*\s+rip=(?P<host>\S*),.*
            pam.*dovecot.*(?:authentication failure).*\s+rhost=<HOST>(?:\s+user=.*)?\s*$

Regards
-- 
Laurent Papier