[TriLUG] Spam help

[Chris Knowles]

AHA!

That's it!  I knew I had read a page that described how to do it.  but
what with my playing around with my home e-mail so much I apparently
lost that thread.  The mailscanner main page has a link describing
exactly what you were talking about.  

As always, we owe you one (both Jon, and the TriLUG community as a
whole.)

CJK

On Sat, 2002-09-07 at 16:27, Jon Carnes wrote:
> Look at the Mail Scanner thread from last week!
> 
> Mail Scanner lets you run Spam Assassin and a virus scanner (linux based
> of course) on all your inbound mail before it reaches your Exchange
> server.  The best part about Mail Scanner in your case, is that
> front-ending Exchange is one of the primary examples of use!
> 
> Here's the quick 1-2-3:
> 
>  1) install Linux as a mail server on a decent box with lots of RAM. 
> Sendmail will work just fine as the MTA.  For about 8k/messages a day
> with normal distribution throughout the day (a double-spiked bell
> curve), I found that you need from 512Mb to 768Mb of RAM.
> 
>  2) Test the new mail server and set it up so that it passes all mail to
> your Exchange server by default.
> 
>  3) Install Spam Assassin on the Linux server (again see the thread on
> Mail Scanner from last week - or the thread on SpamAssassin from two
> months ago).  Set it up to run as a Daemon.
> 
>  4) Install Mail Scanner and tell it to use Spam Assassin.  If you have
> a corporate Virus Scanner license, then down load the Linux virus
> scanner and install that first to the server.
> 
>  5) Test. Test. Test.  Send a bunch of mail through that server and see
> what happens to it.  Even toss a virus through it!
> 
>  6) Now that the new server is working and SpamAssassin is filtering the
> mail on the new mailserver  - modify your DNS to set it as the primary
> for external folks using your mailserver.
> 
> *OR* set the new Linux mail server as the secondary and restrict access
> to your Exchange server's port 25 so that only local access is allowed. 
> Remote mail servers won't be able to drop off to your Exchange server
> and instead they will drop off mail to your new Secondary, which will
> then scan the mail, before forwarding the mail onto the Exchange server.
> ===
> 
> Let me know if you need any help!  And thanks for doing your part to
> stamp out Spam!
> 
> 
> Jon
> ======
> On Sat, 2002-09-07 at 15:48, Chris Knowles wrote:
> > As usual, I come to you in a moment of need.
> > 
> > I'm tired of getting spam at work.  (At home I use SpamAssassin.)
> > 
> > The problem being that....
> > 
> > 1) we use Exchange server, and can't move off of it yet.
> > 2) we have no money to spend.
> > 
> > So I have been looking around, and there are some tantalizing hints
> > about using a Linux post to filter e-mail on it's way to the Exchange
> > server.
> > 
> > Unfortunately, I need more than a few hints.  Can anyone give me some
> > direction on doing this?  Web links, books, and descriptions are all
> > appreciated.
> > 
> > I prefer postfix, but with more direction, I can probably figure out
> > sendmail.
> > 
> > Thanks in advance.
> > 
> > CJK
> > 
> > 
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