Filtering before MS Exchange

[Michael Gale]

Hello,

	I have the following setup ... hopefully I can write a How To ... and 
post it to the list.

We have a postfix server running in the DMZ, it receives all mail from 
the internet.

All mail is received by postfix's smtpd and send to bogofilter for spam 
checking via pipe. Bogofilter checks the message and gives it to 
sendmail to delievery.

This causes the pickup process to get the message which then passed it 
to amavisd-new for virus checking.

If the message it considered spam the mail gets send to a virtual 
account for the user which is available from a web interface.

If the message is not spam it gets forwarded to our exchange server.

On exchange I setup a user called ldapuser which has full control over 
public folders "IT-SPAM".

Any e-mail that users receive that is spam they simple have to drap into 
the public folder.

On the postfix box I am using "offlineimap" to connect to exchange as 
the ldapuser and download any mail in the public folder IT-SPAM.

Bogofilter is then told to classify those e-mails as SPAM.

 From the web interface if a message is not spam, the user can hit a 
"FastForward" button which places a copy of the e-mail in a directory 
accessible by the bogofilter user. It also send the e-mail to the users 
exchange account.

Bogofilter will reclassify the messages in the folder every time the 
officelineimap script is run.

Anything is possible.

Michael.



mbox mbarsalou wrote:
> I personally use bogofilter at home and was considering pitching it to
> an organization that is currently using MS Exchange.
> 
> I am fairly sure that they are not wanting to get rid of Exchange, so my
> thinking is gravitating toward using bogofilter in a gateway machine
> that delivers the mail to the Exchange server.
> 
> What are some opinions from the group here?
> 
> Aside from the distaste some might have for MS Exchange, is this a
> viable option?
> 
> If this is a good idea, what should the gateway machine look like?  What
> services need to be on it and what are some good methods for determining
> the required hardware.  I was thinking something like Sendmail,
> procmail, bogofilter.  Alternatives? 
> 
> We take small positive steps toward the light. :)
> 
> Mike B.
> 
> _______________________________________________
> Bogofilter mailing list
> Bogofilter at bogofilter.org
> http://www.bogofilter.org/mailman/listinfo/bogofilter

-- 
Michael Gale
Lan Administrator
Utilitran Corp.

Linux: because a PC is a terrible thing to waste !!!