RE: SPAM filter...

["Aditya [ Aditya Lalit Deshmukh ]" <aditya () online nailed org>]

hi how about firewalling off the ip - useing many of the opensource implemenations of the firewalls or if your mta is 
postfix you can compile spamassin as a part of postfix and let it handle the spam problem 

it can drop the smtp connection in mid data if it decided that the connection is spam !

or if you are going to use the firewall put the computer in the stealth mode ( ie refuse to outgoing syn or icmp or any 
kind of data ) for the ip address that is sending the emails 

more details like the mta used and the frequency of the attempts and we will come up with a better solution 

-aditya 


-----Original Message-----
From: Vedantam sekhar [mailto:sekhar56us () yahoo com]
Sent: Saturday, December 13, 2003 11:35 AM
To: security-basics () securityfocus com
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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