SMTP mail relay server for SPAM filtering

[Tom Achtenberg]

By using the content filtering and message ratings we have been able to eliminate about 95% of the spam we were receiving.  Especially all the porno spam.  It sits on our VALinux gateway and is doing a great job.  Go to http://www.roaringpenguin.com to read about it.

Subject: RE: SMTP mail relay server for SPAM filtering
From: Craig White <craigwhite@azapple.com>
To: plug-discuss@lists.plug.phoenix.az.us
Date: 20 Jun 2002 09:55:32 -0700
Reply-To: plug-discuss@lists.plug.phoenix.az.us

what's mime-defang have to do with spam?

Craig

On Thu, 2002-06-20 at 09:37, Tom Achtenberg wrote:
> We are using MimeDefang very successfully.
> 
> -------------------original message-------------------------
> 
> Date: Thu, 20 Jun 2002 04:03:49 -0400 (EDT)
> From: Scott Henderson <boyhowdy@cyberspace.org>
> To: plug-discuss@lists.plug.phoenix.az.us
> Subject: SMTP mail relay server for SPAM filtering
> Reply-To: plug-discuss@lists.plug.phoenix.az.us
> 
> My company, like many, I'm sure, is wrestling with spam email. 
> Currently we're handling it manually, creating blocks on our
> Exchange server based on IP addresses.  We are not being given
> any budget to solve this problem, but we do have a few spare
> servers sitting around.  I'm thinking this may be an opportunity
> to show the MS-based IT Dept what can be done with some Open
> Source software.  I'd like suggestions on how to set up an SMTP
> mail relay box and anti-spam software.  I have a year or so
> experience with a few Linux distros on my desktop and laptop at
> home, so I'm no wizard, but I can usually find my way around. 
> Is this doable? We average around 6-700 SMTP emails per hour
> during the day, and spike to maybe 1500 on occasion.  I want to
> set the box up inside the DMZ, in front of the Exchange server,
> and just have it relay to and from that box.  What distro?  What
> software?  How to config?  Any HOWTOs on this or other resources? 
> Thanks much! 
> 


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