RE: Good software against spam

From: Colin Stefani (cstefani@tideworks.com)
Date: 07/30/02 

From: Colin Stefani <cstefani@tideworks.com>
To: "'Jean-Francois Bourdeau'" <jfbourdeau@videotron.ca>, focus-ms@securityfocus.com
Date: Tue, 30 Jul 2002 13:21:15 -0700

Look at the "Dnsrbl" feature in sendmail (and other mailers too) which uses
RBL's (realtime blackhole list) to check if the sending host has a history
of sending spam. This isn't the silver bullet solution your customer
probably wants, but it's a good start.

Also, look at Brightmail (www.brightmail.com) and software filters like
SurfControl (www.surfcontrol.com) and Websense (www.websense.com). I know
there are others out there too. These are pricey (>$20,000), but take
content filtering to a new level. Also, they all maintain some level of
database which is updated frequently and has "finger prints" for known
spams. These filters a highly effective and configurable and resemble a
"firewall" for spam, but they can have false positives (delete or isolate
mail that isn't really supposed to be) sometimes, so the administrative
overhead can be high.

-colin

-----Original Message-----
From: Jean-Francois Bourdeau [mailto:jfbourdeau@videotron.ca]
Sent: Tuesday, July 30, 2002 6:40 AM
To: focus-ms@securityfocus.com
Subject: Good software against spam

Hi

Our customer have Sybari antigen and it's doing a very good job for
viruses... it's Content filtering feature also help for purging email with
subject like viagra, make a million etc

but our customer is receiving a lot of junk " porn " emAil from some
japannese company.... Always sent by different relay server.

What good product can filter spaming ? I would be interested in Gateway
product name, and may be also station product (because only one user has
that problem )

Thanks

JF

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