I installed two Linux/Postfix MX's for my Imail Boxes using
address_verification and it has helped tremendously with dictionary attacks.

I also moved my kill.lst contents and some trusted reverse DNS tests to
these MX's off-loading the Imail boxes.

I used Len's config files as references. This made setup much easier.
Used Redhat Fedora Core 2.  Its all GUI, and Postfix is simple text configs.
A very cheap and easy solution. 

Thanks Postfix, Linux, and Len!


Eddie Cornejo

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of spectro
Sent: Tuesday, July 13, 2004 12:02 PM
To: [EMAIL PROTECTED]
Subject: Re: [IMail Forum] Dictionary attacks ??

We just enabled a Linux/Postfix box in front of imail yesterday. No Imgate
here, just a postfix setup with mailscanner, ClamAV for virus scanning and
Spamassasin. The load on our Imail box when down from an constant 60% down
to spikes of 10% usage.


On Mon, 12 Jul 2004 14:36:16 -0700, A. Clausen <[EMAIL PROTECTED]>
wrote:
> 
> ----- Original Message -----
> From: "David Dodell" <[EMAIL PROTECTED]>
> To: "Imail Mailing List" <[EMAIL PROTECTED]>
> Sent: Monday, July 12, 2004 06:56
> Subject: [IMail Forum] Dictionary attacks ??
> 
> > Is there anything that can be done in Imail to block or stop 
> > dictionary attacks?
> >
> 
> So, in short, IMGate/Postfix is a solution, though one that takes some 
> effort to get going.
> 
> --
> A. Clausen
> [EMAIL PROTECTED]

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