Postfix Spamassassin Filter

gr0undz3r0 · 10-20-2006, 01:33 AM

I have been trying to get Spamassassin set up on my postfix server. I used http://advosys.ca/papers/postfix-filtering.html To go by. Everything installs clean and looks ok till I get to the test portion where I create a txt file and cat it to my filter.

Code:

Change to the /var/spool/filter directory if not there already. Use your favorite text editor to create a file named "test.txt" containing the following:

	
	From: <tester@yourdomain.com>
	To: <you@yourdomain.com>

	Hi there. This is a test message.

Code:

Send the above test message through the filter script as follows:

	
	cat test.txt | /usr/local/anomy/filter.sh -f tester -- root

I do it and I dont get any errors, the tutorial says for some reason I should have mail in root. But I dont.
What am I missing?

billymayday · 10-20-2006, 05:36 AM

First step should always be to look at you log. I'd guess it's maillog

Personally, I'd have a look ate www.postrfix.org and look at one of the howtos and implement amavisd-new. This will call spamassassin for you and filter viruses as well.

Rgds

gr0undz3r0 · 10-20-2006, 07:50 AM

Code:

Oct 20 08:15:53 mail postfix/smtp[29469]: E0C5F804068: to=<tester@mail.mydomain.com>, relay=none, delay=0, status=bounced (mail for mail.mydomain.com loops back to myself)
Oct 20 08:15:53 mail postfix/qmgr[23348]: E0C5F804068: removed

So it looks like I cant take mail that loops back.
I guess I need to fix that.
Any idea how?
Thanx Mate.

billymayday · 10-20-2006, 03:21 PM

Looks like a basic config mistake.

Did you have postfix working before?

Quote:

NOTE: Your server must already have Postfix installed and working. Please do not try to follow these instructions until you first have a basic installation of Postfix working.

WindowBreaker · 10-20-2006, 03:27 PM

Quote:

Originally Posted by gr0undz3r0

Code:

Oct 20 08:15:53 mail postfix/smtp[29469]: E0C5F804068: to=<tester@mail.mydomain.com>, relay=none, delay=0, status=bounced (mail for mail.mydomain.com loops back to myself)
Oct 20 08:15:53 mail postfix/qmgr[23348]: E0C5F804068: removed

So it looks like I cant take mail that loops back.
I guess I need to fix that.
Any idea how?
Thanx Mate.

When you typed out your test.txt file, make sure that you replace the "To: " line with a valid address that Postfix will deliver locally.

To find out which addresses postfix will deliver locally, just have Postfix show you the "mydestination" parameter, as follows:

Code:

postconf mydestination

if you see
mydestination = $myhostname localhost.$mydomain localhost
then those are the default settings, and mail sent to user@mydomain.com will not be delivered locally, but mail sent to user@hostname.mydomain.com will be, since "mydestination" has $myhostname listed.

I would suggest you read http://www.postfix.org/BASIC_CONFIGURATION_README.html

It's very easy to follow, and will ensure your foundational configuration of Postfix is not only set correctly, but understood.

gr0undz3r0 · 10-21-2006, 01:44 AM

I dont think the contents of the text file matter.
I dont have the user tester in the textfile:
The Text File:

Code:

From: <gooduser@mydomain1.com>
To: <gooduser2@mydomain2.com>

Hi there. This is a test message.
~

Output from maillog:

Code:

Oct 21 02:10:56 mail postfix/smtp[23718]: 203CE804068: to=<tester@mail.mydomain.com>, relay=none, delay=0, status=bounced (mail for mail.mydomain.com loops back to myself)
Oct 21 02:10:56 mail postfix/qmgr[23348]: 203CE804068: removed

I think the sender and recipient are stated in the command line var:

Code:

 cat test.txt | /usr/local/anomy/filter.sh -f tester -- root

Note: -f tester -- root.
Would be the from and to users.
Lastly the output of postconf mydestination

Code:

mydestination = mydomain1.com, mydomain2.com, mydomain3.com

Do I need to ad local hosts if so how?
EDIT:
I added localhost to mydestination in main.cf and bang the mail delivered.
Thanx a ton.