Security Incidents mailing list archives
Re: Massive SPAM Increase
From: "Jamie Riden" <jamesr () europe com>
Date: Tue, 17 Oct 2006 14:33:54 +1300
On 17/10/06, gabriel rosenkoetter <gr () eclipsed net> wrote:
On Sat, Oct 14, 2006 at 12:17:51PM -0500, Paul Schmehl wrote: > It appears that what you're missing is that this one "flaw" is not enough > to get mail rejected by policyd-weight. What you're missing is that the assumption that systems sending valid mail will always (or even will usually) be listed in DNS is fundamentally wrong and should never be used even as a weighted guess to indicate spam.
Well, they may be listed in SPF records, though I agree not in MX. And by itself, I don't believe SPF provides a useful indication one way or the other as to whether a message is spam or not. Lots of spammers set up SPF records these days. cheers, Jamie -- Jamie Riden, CISSP / jamesr () europe com / jamie.riden () gmail com NZ Honeynet project - http://www.nz-honeynet.org/ ------------------------------------------------------------------------------ This List Sponsored by: Black HatAttend the Black Hat Briefings & Training USA, July 29-August 3 in Las Vegas. World renowned security experts reveal tomorrow's threats today. Free of vendor pitches, the Briefings are designed to be pragmatic regardless of your security environment. Featuring 36 hands-on training courses and 10 conference tracks, networking opportunities with over 2,500 delegates from 40+ nations.
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Current thread:
- Re: Massive SPAM Increase {-2.6} {-2.6}, (continued)
- Re: Massive SPAM Increase {-2.6} {-2.6} Brent Kearney (Oct 09)
- Re: Massive SPAM Increase {-2.6} {-2.6} Paul Schmehl (Oct 09)
- Re: Massive SPAM Increase {-2.6} {-2.6} Graeme Fowler (Oct 09)
- Re: Re: Massive SPAM Increase {-2.6} {-2.6} Luke Burton (Oct 09)
- Re: Massive SPAM Increase Tillmann Werner (Oct 10)
- Re: Massive SPAM Increase {-2.6} {-2.6} Valdis . Kletnieks (Oct 16)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Paul Schmehl (Oct 16)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Valdis . Kletnieks (Oct 16)
- Re: ***SPAM*** Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Paul Schmehl (Oct 16)
- Re: Massive SPAM Increase gabriel rosenkoetter (Oct 16)
- Re: Massive SPAM Increase Jamie Riden (Oct 17)
- Re: ***SPAM*** Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Dude VanWinkle (Oct 17)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} benfell (Oct 16)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Paul Schmehl (Oct 16)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} gabriel rosenkoetter (Oct 17)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Valdis . Kletnieks (Oct 16)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Paul Schmehl (Oct 16)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} gabriel rosenkoetter (Oct 17)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Valdis . Kletnieks (Oct 17)
- Re: ***SPAM*** Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} Paul Schmehl (Oct 17)
- Re: ***SPAM*** Re: Massive SPAM Increase {-2.6} {-2.6} benfell (Oct 16)