Re: SPAM filter...

From: Nabil SEFRIOUI (admin_at_osmium-work.com)
Date: 12/22/03

  • Next message: Rodrigo B. Ramos: "PROTO=TCP INCOMPLETE" 
    To: <security-basics@securityfocus.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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