Re: [exim] flood protection

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Author: Renaud Allard
Date:  
To: Klauss Fumuldavijus, exim-users
Subject: Re: [exim] flood protection


Klauss Fumuldavijus wrote:
> hello,
>
> imagine a situation when certain spam hosts are flooding exim 4.66 mail server with thousands of email messages per minute.
> all of those rcps are rejected because of presence in the gray-lists.
>
> Some questions realated to solving the problem:
>
> is exim able to limit message rate from a certain host?
> or...maybe it is possible to give kind of ban on certain ip address depending on spam-list information?
>
> sadly, google seems to give no answers on this problem...
>
> please, share your opinion on this matter, because damn spammers are eating server's bandwidth and hardware resources.
>
> currently i am using exim's log analyzer and firewall deny rule generator, but rule count is increasing in geometrical proggression and server gets to low on resources...
>
> thank you


Here it is
http://www.exim.org/exim-html-current/doc/html/spec_html/ch40.html#SECTratelimiting