RE: [Declude.JunkMail] SURBL filter script

2004-04-16 Thread Andy Schmidt
Hi Markus:

I'm curious:

 All of this 24 messages are NDR's or Notifications send from  back
to the recipient.

Why did these NDRs contain a blocked URL?  Were they indeed wanted NDRs,
or were they NDRs for Spam that wasn't delivered, which happened to have one
of your users as the faked sender?

Best Regards
Andy Schmidt

HM Systems Software, Inc.
600 East Crescent Avenue, Suite 203
Upper Saddle River, NJ 07458-1846

Phone:  +1 201 934-3414 x20 (Business)
Fax:+1 201 934-9206

http://www.HM-Software.com/


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Markus Gufler
Sent: Friday, April 16, 2004 04:25 AM
To: [EMAIL PROTECTED]
Subject: RE: [Declude.JunkMail] SURBL filter script



 It will take a day or two before the log analysis and test
 check scripts are available, since I must adjust them to 
 handle all log levels.

Here are my results from 04/15/2004

Processed messages: 9832

Hold as Spam:   4728  (48% of all messages)
Detected by SURBL:  2552  (54% of hold spam / 26% of all messages)

FP's from SURBL:  24
All of this 24 messages are NDR's or Notifications send from  back to
the recipient. None of this SURBL false positives has caused a message to
reach the hold weight and so become a real FP.

95% of all spam messages catched by SURBL has already reached a weight 
200% of our hold weight. So inserting a initial SKIPIFWEIGHT should
significantly save resources.

Excellent test!

Markus


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RE: [Declude.JunkMail] SURBL filter script

2004-04-16 Thread Scott Fisher
My results from a business setting are very positive also.

294 hits.
292 SPAM
2 NotSpam (both from the declude mailing list hitting on webhosting.yahoo.com)

Scott Fisher
Director of IT
Farm Progress Companies

 [EMAIL PROTECTED] 04/16/04 03:25AM 

 It will take a day or two before the log analysis and test 
 check scripts are available, since I must adjust them to 
 handle all log levels.

Here are my results from 04/15/2004

Processed messages: 9832

Hold as Spam:   4728  (48% of all messages)
Detected by SURBL:  2552  (54% of hold spam / 26% of all messages)

FP's from SURBL:  24
All of this 24 messages are NDR's or Notifications send from  back to
the recipient.
None of this SURBL false positives has caused a message to reach the hold
weight and so become a real FP.

95% of all spam messages catched by SURBL has already reached a weight 
200% of our hold weight. So inserting a initial SKIPIFWEIGHT should
significantly save resources.

Excellent test!

Markus


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RE: [Declude.JunkMail] SURBL filter script

2004-04-16 Thread Markus Gufler

 I'm curious:

I'm too  ;-)


 Why did these NDRs contain a blocked URL?  Were they indeed 
 wanted NDRs, or were they NDRs for Spam that wasn't 
 delivered, which happened to have one of your users as the 
 faked sender?

After searching trough the logfiles I've discovered that this messages are
NDR's or Notifications from other mailservers (Exchange, ...) that are in
use on customers side as in-house mailserver. This MTAs are using our
Mailserver as smart host/gateway.

Talking with on of this customers I've discovered that they're retrieving
also messages from another (old) mailbox.
So I asume this NDR's contains part of the original body and so also some
blacklisted URLs.

Markus




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RE: [Declude.JunkMail] SURBL filter script

2004-04-16 Thread Goran Jovanovic
Roger,

I just downloaded the script and got it to update. Thank you.

I looked through the messages on the list but I could not find what is
the suggested weight for this test. Any suggestions? I am currently
marking SPAM at 10 and seeing how that goes. I would like to start
deleting at 20 or so. I figure I will need the following command in
GLOBAL.CFG but I am not sure what to use for weight. 

SURBL   filter   D:\IMail\Declude\SURBL\surbl.txt
x   0   0

The filter has 0 on each line so this means to me that if it trips on
any line it will return a 0 to the processing engine and that will get
added to the x in the line above.

Suggestions would be appreciated.

Thanx
 
 Goran Jovanovic
 The LAN Shoppe

 

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RE: [Declude.JunkMail] SURBL filter script

2004-04-16 Thread Markus Gufler

 I looked through the messages on the list but I could not 
 find what is the suggested weight for this test. Any 
 suggestions? 

I can see that SURBL has the same efficiency as CBL, DSBL or XBL-DYNA. So
maybe you can use the same weight as for this tests.
At the moment I use a weight corresponding to 35% of our HOLD/DELETE weight
but as this test is fairly new we have to test it for some additional
days/week.

Markus



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RE: [Declude.JunkMail] SURBL filter script

2004-04-15 Thread Roger Eriksson
The SURBL rbldns zone file is updated every five minutes or so, but
the difference between these updates is small. I think that a filter
update once or twice a day is enough.
/Roger


  The command script that downloads the SURBL rbldns zone file,
 converts it to a body filter, and updates the existing filter
 file is available for download at
 http://www.botany.gu.se/download/decludescript/SURBL_filter.zi
 p. I have included a short readme file and added comments to
 the script.
Wow! Great script.
Downloaded, unpacked, set the script location, works fine!
Any suggestions on how often we should update the file? Hourly, daily, ...

Thank you
Markus
--
--
Roger Eriksson
Botanical Institute, Göteborg University
Box 461, SE 405 30 Göteborg, Sweden
Visiting/delivery address:
Carl Skottsbergs Gata 22 B, SE 413 19 Göteborg, Sweden
Phone: +46 31 7732666   Fax: +46 31 7732677
http://www2.botany.gu.se/staff/rogeri/welcome.html
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Re: [Declude.JunkMail] SURBL filter script

2004-04-14 Thread Roger Eriksson
Hi again,

This version of the SURBL filter script only works under Windows 2000 
and later. I will try to adjust the script so that it also can be 
used on Windows NT 4.

/Roger


Hi,

The command script that downloads the SURBL rbldns zone file, 
converts it to a body filter, and updates the existing filter file 
is available for download at 
http://www.botany.gu.se/download/decludescript/SURBL_filter.zip. I 
have included a short readme file and added comments to the script.

It will take a day or two before the log analysis and test check 
scripts are available, since I must adjust them to handle all log 
levels.

/Roger
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RE: [Declude.JunkMail] SURBL filter script

2004-04-14 Thread Markus Gufler

 The command script that downloads the SURBL rbldns zone file, 
 converts it to a body filter, and updates the existing filter 
 file is available for download at 
 http://www.botany.gu.se/download/decludescript/SURBL_filter.zi
 p. I have included a short readme file and added comments to 
 the script.

Wow! Great script.
Downloaded, unpacked, set the script location, works fine!

Any suggestions on how often we should update the file? Hourly, daily, ...

Thank you
Markus




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RE: [Declude.JunkMail] SURBL filter script

2004-04-14 Thread Scott Fisher
I agree. It took 10 minutes to get this test working.
And many of the domains listed were in my e-mails that are (hopefully were) falling 
into that gray area.

Scott Fisher
Director of IT
Farm Progress Companies

 [EMAIL PROTECTED] 04/14/04 04:48PM 

 The command script that downloads the SURBL rbldns zone file, 
 converts it to a body filter, and updates the existing filter 
 file is available for download at 
 http://www.botany.gu.se/download/decludescript/SURBL_filter.zi 
 p. I have included a short readme file and added comments to 
 the script.

Wow! Great script.
Downloaded, unpacked, set the script location, works fine!

Any suggestions on how often we should update the file? Hourly, daily, ...

Thank you
Markus




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