[Dovecot] limiting the per-time connections from one single IP address
rick at havokmon.com
Mon Jul 28 18:28:13 EEST 2008
On Mon, 2008-07-28 at 17:23 +0200, suomi wrote:
> Hi every
> we had a havy pop3 attach yesterday morning: about 400'000 connects in
> three hours from one single IP address within wandadoo.fr.
> the easiest way, to protect the dovecot server against such attacks
> would be to limit the number of connections anyone can open from one
> single IP address to the server in a certain time.
It's available in 1.1:
# Maximum number of POP3 connections allowed for a user from each IP
# NOTE: The username is compared case-sensitively.
#mail_max_userip_connections = 3
More information about the dovecot