+1 for fail2ban. I am using it for a month now and it works like an charm.<br><br><div class="gmail_quote">On Fri, Feb 18, 2011 at 10:34 PM, Alex Neuman van der Hans <span dir="ltr">&lt;<a href="mailto:alex@vidadigital.com.pa">alex@vidadigital.com.pa</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Try fail2ban or vispan.<div><div></div><div class="h5"><br>
<br>
On 2/18/2011 3:08 PM, Mikael Syska wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
&lt;joke&gt;<br>
Go offline ... then they can&#39;t attack your domain.<br>
&lt;/joke&gt;<br>
<br>
What seems to be the problem? Since you can&#39;t really make them stop<br>
... there arent much you can do other than deny delivery for unknown<br>
users in your system ... and then scan the rest.<br>
<br>
Still ... I can&#39;t see the problem.<br>
<br>
mvh<br>
Mikael Syska<br>
<br>
On Fri, Feb 18, 2011 at 8:44 PM, Ejaz&lt;<a href="mailto:mejaz@cyberia.net.sa" target="_blank">mejaz@cyberia.net.sa</a>&gt;  wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
<br>
<br>
Now days there is lots of dictionary attacks towards my domain, find the<br>
below one of the example, would any one please help me how can I prevent<br>
such attacks,<br>
<br>
<br>
<br>
In my Linux machine, I have postfix, MailScanner, Spamassasin and clamav,<br>
<br>
<br>
<br>
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<br>
<br>
<br>
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<br>
  <a href="mailto:xulmymyzfjkaf@boutiquesearchfirm.com" target="_blank">xulmymyzfjkaf@boutiquesearchfirm.com</a><br>
<br>
                                          <a href="mailto:nkanta@cyberia.net.sa" target="_blank">nkanta@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nm2001@cyberia.net.sa" target="_blank">nm2001@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nmj@cyberia.net.sa" target="_blank">nmj@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nmj_textile@cyberia.net.sa" target="_blank">nmj_textile@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nmjnn@cyberia.net.sa" target="_blank">nmjnn@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nnasmac@cyberia.net.sa" target="_blank">nnasmac@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nnasmacb@cyberia.net.sa" target="_blank">nnasmacb@cyberia.net.sa</a><br>
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                                          <a href="mailto:nnasmacd@cyberia.net.sa" target="_blank">nnasmacd@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nnasmacdd@cyberia.net.sa" target="_blank">nnasmacdd@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nnasr@cyberia.net.sa" target="_blank">nnasr@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nnsisco@cyberia.net.sa" target="_blank">nnsisco@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:noda@cyberia.net.sa" target="_blank">noda@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nomer1@cyberia.net.sa" target="_blank">nomer1@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nospam@cyberia.net.sa" target="_blank">nospam@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:notify@cyberia.net.sa" target="_blank">notify@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nour@cyberia.net.sa" target="_blank">nour@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:noura@cyberia.net.sa" target="_blank">noura@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nozhamed@cyberia.net.sa" target="_blank">nozhamed@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nplumbly@cyberia.net.sa" target="_blank">nplumbly@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:ns@cyberia.net.sa" target="_blank">ns@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nsaf-riyadh@cyberia.net.sa" target="_blank">nsaf-riyadh@cyberia.net.sa</a><br>
<br>
                                          <a href="mailto:nsaurabia@cyberia.net.sa" target="_blank">nsaurabia@cyberia.net.sa</a><br>
<br>
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<br>
<br>
<br>
<br>
<br>
Regards,<br>
__________________<br>
Ejaz<br>
Sr,Systems Administrator<br>
Middle East Internet Company (CYBERIA)<br>
Riyadh, Saudi Arabia<br>
Phone: +966-1-4647114  Ext: 140<br>
Mobile +966-562311787<br>
Fax: +966-1-4654735<br>
E-mail: <a href="mailto:mejaz@cyberia.net.sa" target="_blank">mejaz@cyberia.net.sa</a><br>
<br>
<br>
<br>
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</blockquote></blockquote>
<br></div></div>
-- <br>
--<br>
<br>
Alex Neuman van der Hans<br>
Reliant Technologies / Vida Digital<br>
<a href="http://vidadigital.com.pa/" target="_blank">http://vidadigital.com.pa/</a><br>
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