[NTLUG:Discuss] More spamshield project

[. Daniel]

At the very least, I hope to have this process documented well enough that 
just about anyone could follow the instructions.  I've never made a distro 
CD or live CD of any kind before and not sure where I would start.

NTLUG has some talent and ability within for sure.  And really, as it is, I 
could leave it just as greylisting with user verification via AD/Kerberos 
and it would be an excellent device.  Here at home, my mail server is 
essentially the same sort of "out of the box, barely tweaked" 
configuration.  Seems that SpamAssassin is preconfigured for local 
delivery.  If I could get some good how-to on how to make it filter ALL 
incoming mail, I'd be just about done.  I keep getting the feeling that I'm 
a fraction of an inch away from success on that.

But last night in my searches, I came across another site:

http://www.leap-cf.org/presentations/MailScanner/MailScanner.html

It's not what I originally set out to do, but it looks like it would get 
the job done.  Last night I fell asleep while doing the install of the 
mail-scanner package which is a clever collection of source RPMs tied 
together with an install.sh script.  I must admit it's rather novel.  And 
since the page is built around CentOS 4.4, I have a pretty good chance at 
success by following those instructions-- they seem well written.

If that works out as I expect it will, then perhaps *IT* will be the 
makings of your appliance setup.  As the name implies, I believe it does 
content filtering and all that.


>I have nothing to add, but keep up the good work! Sounds like the
>makings of a cool appliance CD. As a network engineer I have had to
>support exchange and I really hate it and outlook with a raging passion.
>   For those clients of mine that insist, a bundled CentOS CD with all
>this stuff in a raw pre-fab format would be a god-send.
>
>
>. Daniel wrote:
> > Just to recap, here's what I've got so far:
> >
> > The goal is to make an external SMTP relay box that checks for spam and
> > eventually forbidden attachments and sends the good stuff on to an 
internal
> > MS Exchange server.
> >
> > What works:
> > * CentOS and the basics (sendmail, webmin, etc)
> > * Greylisting (Endless thanks to Wayne)
> > * Connecting to the Active Directory to test for valid accounts (Thanks 
to
> > Chris!)
> > * Relaying incoming mail to Exchange via SMTP (piece of cake)
> >
> > What doesn't work:
> > * SpamAssassin isn't checking the relayed email.
> >   (It does check local delivery though. Procmail calls SpamAssassin.)
> > * Forbidden attachment scanning (haven't even gotten there yet)
> >
> > I have gotten to the point where I am too sleepy to think or read any
> > further.  This combination of tools and the goals are not unique.  I 
just
> > haven't found the missing details yet.  I'm guessing somene here 
already
> > knows the answer though.  Anyone got anything?
> >
> > _________________________________________________________________
> > 
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>Jay Urish CCNA    Network Engineer
>http://jay.unixwolf.net
>Home)972.691.0125    Cell)972.965.6229
>
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