dictionary attack

[Naz Snidanko]

>From what I understand he is not using recipient table and accepting email for anything @cyberia.net.sa. Are you using MailScanner server in gateway mode, or is this server is the final destination for your email?

Naz Snidanko
Desktop & Network Support
Harper Power Products Inc.
(p) 416 201- 7506
 nsnidanko at harperpowerproducts.com
-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Mikael Syska
Sent: February 18, 2011 3:09 PM
To: MailScanner discussion
Subject: Re: dictionary attack

Hi,

<joke>
Go offline ... then they can't attack your domain.
</joke>

What seems to be the problem? Since you can't really make them stop
... there arent much you can do other than deny delivery for unknown
users in your system ... and then scan the rest.

Still ... I can't see the problem.

mvh
Mikael Syska

On Fri, Feb 18, 2011 at 8:44 PM, Ejaz <mejaz at cyberia.net.sa> wrote:
> Hello,
>
>
>
> Now days there is lots of dictionary attacks towards my domain, find the
> below one of the example, would any one please help me how can I prevent
> such attacks,
>
>
>
> In my Linux machine, I have postfix, MailScanner, Spamassasin and clamav,
>
>
>
>
>
>
>
>
>
>  xulmymyzfjkaf at boutiquesearchfirm.com
>
>                                          nkanta at cyberia.net.sa
>
>                                          nm2001 at cyberia.net.sa
>
>                                          nmj at cyberia.net.sa
>
>                                          nmj_textile at cyberia.net.sa
>
>                                          nmjnn at cyberia.net.sa
>
>                                          nnasmac at cyberia.net.sa
>
>                                          nnasmacb at cyberia.net.sa
>
>                                          nnasmacd at cyberia.net.sa
>
>                                          nnasmacdd at cyberia.net.sa
>
>                                          nnasr at cyberia.net.sa
>
>                                          nnsisco at cyberia.net.sa
>
>                                          noda at cyberia.net.sa
>
>                                          nomer1 at cyberia.net.sa
>
>                                          nospam at cyberia.net.sa
>
>                                          notify at cyberia.net.sa
>
>                                          nour at cyberia.net.sa
>
>                                          noura at cyberia.net.sa
>
>                                          nozhamed at cyberia.net.sa
>
>                                          nplumbly at cyberia.net.sa
>
>                                          ns at cyberia.net.sa
>
>                                          nsaf-riyadh at cyberia.net.sa
>
>                                          nsaurabia at cyberia.net.sa
>
>
>
>
>
>
>
> Regards,
> __________________
> Ejaz
> Sr,Systems Administrator
> Middle East Internet Company (CYBERIA)
> Riyadh, Saudi Arabia
> Phone: +966-1-4647114  Ext: 140
> Mobile +966-562311787
> Fax: +966-1-4654735
> E-mail: mejaz at cyberia.net.sa
>
>
>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
> --
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