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- Original Message - From: "Rene Luria" <[EMAIL PROTECTED]>
To: ; <[EMAIL PROTECTED]>
Sent: Monday, November 27, 2006 5:58 PM
Subject: [swinog] smtp attacks
Hi folks,
We are currently experiencing a heavy load on all our smtp inbound
servers since
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- Original Message -
From: "Rene Luria" <[EMAIL PROTECTED]>
To: ; <[EMAIL PROTECTED]>
Sent: Monday, November 27, 2006 5:58 PM
Subject: [swinog] smtp attacks
Hi folks,
We are currently experiencing a heavy load on all our smtp inbound
servers since s
On Monday 27 November 2006 20:43, Daniel Kamm wrote:
> Graylisting possibly helps as well.
Graylsiting screws up the system "E-Mail" and doesn't help if the
other end is a regular mailserver (cracked useraccount...).
I think the only long-term reliable means to the solution of this
problem rema
On Mon, 2006-11-27 at 17:58 +0100, Rene Luria wrote:
> It is due to bounces coming from everywhere. Spamers using fake email
> addresses from domains for which we are the MX.
>
> The amount of such emails (which we almost all reject, user unknown,
> etc.. because of the fake email addresses) is en
Hi
> The problem was made worse by the fact that we had left the response
> code for a reject due to unknown recipient as 4xx, so naturally one of
> these emails resulted in many connection attempts if they came from a
> real mail server (as opposed to a zombie). At one point we were up to
> 500
On Mon, Nov 27, 2006 at 05:58:03PM +0100, Rene Luria wrote:
> The amount of such emails (which we almost all reject, user unknown,
> etc.. because of the fake email addresses) is enormous compared to
> normal traffic (like 10 times what we have in general).
>
> Do any of you experience the same pr
Many of those bounces aren't real bounces, but spam messages with virus
attachments.
we use Policyd (http://policyd.sourceforge.net/) with Postfix in front of
the main mailserver (Plesk), and it offloads it significantly. Also the
amount of spam has reduced dramatically.
We use also Policyd f
Hi folks,
We are currently experiencing a heavy load on all our smtp inbound
servers since saturday.
It is due to bounces coming from everywhere. Spamers using fake email
addresses from domains for which we are the MX.
The amount of such emails (which we almost all reject, user unknown,
etc.. be
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