malicious or confused clients

:: L i n u XK i D :: · *nix forums beginner Joined: 26 Feb 2005 Posts: 11

Hi

I've a small LAN (50 hosts), and a Postix that
works as "mail gateway" .

The problem is that somtimes, diferents "confused" clients
starts to send 5 or 10 mails / second during some minutes.

Of course, after that "attack" to Postfix, the result
is a mail queue full of no genuine mails...
and this is a DoS attack to my postfix

There is a way to solve this ?

Can I put a rate of -let us suppose- 10 mails
by minute ??

I've:
Postfix 2.X
SpamAssassain
Amavis
Clamav

Thank you.
bests

andres

Wietse Venema · *nix forums Guru Joined: 27 Feb 2005 Posts: 2697

:: L i n u XK i D :::

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