Re: SPAM filter...

["Paul Kurczaba" <paul () myipis com>]

Kerio MailServer, although not open source, has a "max. number of unknown
recipients (directory harvest attack protection)" feature. I have enabled
this on my email server, and have it set to 5. Therefore, when the spammer
guesses five incorrect email addresses, the mailserver will block the
spammers IP. It is very effective.

-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
>
>
>
>
>
> __________________________________
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>
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>



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