[Dovecot] How to limit max number of connections for ip address

Charles Marcus CMarcus at Media-Brokers.com
Fri Feb 24 21:29:26 EET 2012

On 2012-02-24 10:07 AM, Wilberth Perez <wilberth.perez at uady.mx> wrote:
> My question was because constantly we received brute force attack from
> some of ip address which uses pop3 service to affect dovecot's login
> proccess.

This is quickly becoming an FAQ...

If this is linux, and these attacks are from the *same* IP address(es) 
(sounds like that is the case), then your best option is something like 
fail2ban. If, however, they are from bots that change IP address each 
time, fail2ban won't be effective...


Best regards,


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