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Re: SPAM filter...
From: Nabil SEFRIOUI <admin () osmium-work com>
Date: Mon, 22 Dec 2003 18:49:38 +0000

Le Dimanche 21 Décembre 2003 09:40, sietze a écrit :

u can use a combinaison of  postfix+amavis-new+spamassassin.

spamassassin accurate enought to be run in a production environement.

postfix have a feature to prevent DoS and it can be used to solve your 
problem. you define a soft and hard error limit, if the soft limit is 
reached, the server will sleep n seconds (n is the error count) and 
when reaching the hard limit the server drop the connexion
you can specify also a sleep time between each error before reaching the 
soft limit

you can alsa use an antivirus scanner whith amavis-new if you have one, 
amavis support a lot of them

 >
 > -Paul Kurczaba
 > ----- Original Message -----
 > From: "Vedantam sekhar" <sekhar56us () yahoo com>
 > To: <security-basics () securityfocus com>
 > Sent: Saturday, December 13, 2003 1:04 AM
 > Subject: SPAM filter...
 >
 > > Dear All,
 > >
 > > Can any body suggest me the mail filter
 > > software(Opensource :-)) which can avoid the
 > > dictionary atttacks on the server.Our mx server has
 > > Solaris O.S.
 > >
 > > The spammmers are trying to find out the Valid E-mails
 > > by blindly sending mails to randomly selected
 > > characters as receipent ID?
 > >
 > >
 > > Thanks
 > >
 > > V.N.SEKHAR
 > >
 > >
 > >
 > >
 > >
 > > __________________________________
 > > Do you Yahoo!?
 > > New Yahoo! Photos - easier uploading and sharing.
 > > http://photos.yahoo.com/
 >
 > -----------------------------------------------------------------
 > ---------
 > -
 >
 > -----------------------------------------------------------------
 > ---------
 > --

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-- 
__________________________________
Osmium Work - Ingénierie Open Source
http://www.osmium-work.com/


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