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

2012-02-24 Thread Timo Sirainen
On 24.2.2012, at 17.07, Wilberth Perez 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. > > For example: > > dovecot: Error: pipe() failed: Too many open files > dovecot: Error: Temp

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

2012-02-24 Thread Charles Marcus
On 2012-02-24 10:07 AM, Wilberth Perez 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 add

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

2012-02-24 Thread Wilberth Perez
Hi Timo: 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. For example: Error: Temporary failure in creating login processes, slowing down for now pop3-login: Info: Aborted login (auth failed, 1

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

2012-02-23 Thread Timo Sirainen
On 24.2.2012, at 0.33, Wilberth Perez wrote: > Does any one , knows if is possible configure dovecot for limit max > number of connections for IP address? > > I would like to prevent future fork-bombing attacks for pop3 and imap > login process in my email server. > > Our dovecot version is : 1

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

2012-02-23 Thread Wilberth Perez
Hi List: Does any one , knows if is possible configure dovecot for limit max number of connections for IP address? I would like to prevent future fork-bombing attacks for pop3 and imap login process in my email server. Our dovecot version is : 1.2.10 Thanks, Wilberth. smime.p7s Descripti