Full Disclosure mailing list archives
RE: Spam with PGP
From: "Bassett, Mark" <mbassett () omaha com>
Date: Thu, 9 Oct 2003 08:46:19 -0500
Using free tool K9. I haven't had to change one from spam to not spam in at least a couple weeks. Does a great job, and super easy to set up. http://www.keir.net/k9.html Column 1: Since Sun Apr 20 2003 12:00:00 AM (172 days) Column 2: Since Sun Apr 20 2003 12:00:00 AM (172 days) Total number of emails processed 268 Number of Good emails processed 73 Number of Spam emails processed 195 Percentage of emails that matched whitelist rules 0.0% Percentage of emails that matched blacklist rules 0.0% Number of emails re-classified to Good 15 Number of emails re-classified to Spam 12 Percentage emails misidentified as Spam (false positives) 5.6% Percentage emails misidentified as Good (false negatives) 4.5% Overall accuracy 89.9% Mark Bassett Network Administrator World media company Omaha.com 402-898-2079 -----Original Message----- From: Jonathan A. Zdziarski [mailto:jonathan () nuclearelephant com] Sent: Wednesday, October 08, 2003 11:24 AM To: Michael D Schleif Cc: full-disclosure () lists netsys com Subject: Re: [Full-disclosure] Spam with PGP
Just exactly *HOW* do you measure ``literally 100%''?
E.g. over the past four months or so, every single spam that has come through has been caught.
How do you account for false positives and false negatives?
Haven't had any of either in four months.
Do you manually examine every message, whether or not flagged as spam?
Yes. I go through my quarantine box daily to detect false positives, and would know if I received a spam.
As impressive as that phrase ``literally 100%'' is, I am considerably skeptical. I have never -- in thirty years -- found any software utility that can beat five-nines statistics.
I'm not suggesting DSPAM is capable of this for every user - and I am certain that I will receive some spam eventually to ruin my golden streak, as there are always new types of spams to learn. My wife doesn't get 100%; she's been getting around 99% until I tinkered with dictionary lately (she's one of my guinnea pigs)..and I've talked to some users who are only getting around 95%...please don't think I'm trying to suggest my solution is the end-all-be-all solution. But as for me, yes I'm getting 100% so far.
How can we get hold of yours?
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Current thread:
- RE: Spam with PGP, (continued)
- RE: Spam with PGP Brown, Randy (InfoSec) (Oct 07)
- Re: Spam with PGP Dave Howe (Oct 07)
- Re: Spam with PGP DAN MORRILL (Oct 07)
- RE: Spam with PGP Brian Dinello (Oct 07)
- Re: Spam with PGP Thomas Binder (Oct 07)
- Re: Spam with PGP MaX Flebus (Oct 07)
- Re: Spam with PGP Curt Purdy (Oct 08)
- Re: Spam with PGP Steffen Kluge (Oct 09)
- Re: Spam with PGP Curt Purdy (Oct 08)
- RE: Spam with PGP Zach Forsyth (Oct 07)
- Spam with PGP Olivier (Oct 08)
- RE: Spam with PGP Bassett, Mark (Oct 09)
- RE: Spam with PGP Brown, Randy (InfoSec) (Oct 07)