Re: SPAM filter...

[Nabil SEFRIOUI <admin () osmium-work com>]

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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-- 
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http://www.osmium-work.com/


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