[TriLUG] Open source spam control & filtering?

[Jon Carnes]

Exchange goes on the inside of the company firewall and a linux box
running MailScanner goes on the outside and acts as pass-thru box for
your incoming mail. 

The MailScanner box will look for viruses ala ClamAV (or any number of
popular Antivirus packages) and by using a set of email policies (like
not allowing mail with .exe, .pif, and .com attachments)

It will help you identify spam ala SpamAssassin and various RBL's (use
the RBL listings to give higher weight to Spam values...)

If you want it to, it will quarantine suspicious emails and hold them
for you to decide "thumbs up" or "thumbs down". 

It lets you build your own black lists (or white lists). Disable
dangerous code found in html email. It does pretty much anything and
everything you want a Mail Scanner to do! :-)

 http://wiki.mailscanner.info/doku.php?id=maq:index

Enjoy!

Jon Carnes

ps. If you want to filter and monitor internet browsing then look at
Squid/SquidGuard. Running Squid in Active mode (with outbound port 80
being forwarded at the firewall to the Squid box) lets you
filter/monitor your users without their ever being aware of it.

You can do some very amazing stunts like forward a request to load a
porn site on to someplace like: 
  http://www.veganporn.com/faq.pl

Hay why not? Lets have some fun with these buggers who are wasting the
corporate nickle, locked their office playing with their pickle.


On Wed, 2005-12-21 at 17:09, Chad Thomsen wrote:
> Am going to put an Exchange server in for email and I have no choice on
> that.  I do however have a choice in Spam/Virus/HTTP filtering for a gateway
> solution.  Want to filter spam, viruses, spyware and possibly stop users
> from visiting black listed web sites that are against company policy.
> 
> I am looking at all types of products form Symantec, Barracuda, Iron Port,
> Trend etc etc.  I thought I might even build myself an opensource one.
> Question for you all is there a good open source solution?
> 
> I am open to any suggestions.  This is for a corporate environment with
> about 250 users.
> 
> Thanks!
> 
> Chad