Security Incidents mailing list archives
Re: Massive SPAM Increase {-2.6} {-2.6}
From: Tim <tim-forensics () sentinelchicken org>
Date: Mon, 9 Oct 2006 17:29:23 -0400
Its purpose is to reject *all* mail from bogus MTAs - dialups, misconifigured servers, MTAs that aren't registered in the domains' DNS as a "legal" MX, MTAs that don't reverse properly, etc., etc. If the email is forged in any way, it will never make it to DATA.
That's great, except it makes the internet more expensive for the little guy. If you're trying to run a non-spamming personal mailserver off of a consumer DSL or cable line, you can get screwed by others' policies like this because you may not have control over your PTR records or how your ISP lists you as a non-MTA with other organizations. Sure, argue that the little guy should just shell out for a better line, but if he could, he wouldn't be the little guy. I understand that a very large percentage of these lines are not sending legitimate mail directly to you, but strictly blocking all of them without any other information is a bit harsh. Might be more fair to use some form of boosting to combine information about dialup ranges with other indicators. cheers, tim P.S.- If you're wondering why such a little guy wouldn't just forward all mail through their ISPs mail server, well, those cheap DNS/Cable services often come complete with really slow, buggy, and terribly configured mail servers, which is why a little guy might prefer not letting his mail touch them. ------------------------------------------------------------------------------ This List Sponsored by: Black Hat Attend 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. http://www.blackhat.com ------------------------------------------------------------------------------
Current thread:
- Massive SPAM Increase Alex (Oct 08)
- Re: Massive SPAM Increase Kurt Seifried (Oct 08)
- Re: Massive SPAM Increase {-2.6} Vini Engel (Oct 09)
- Re: Massive SPAM Increase {-2.6} Kurt Seifried (Oct 09)
- Re: Massive SPAM Increase {-2.6} {-2.6} Vini Engel (Oct 09)
- Re: Massive SPAM Increase {-2.6} {-2.6} Paul Schmehl (Oct 09)
- Re: Massive SPAM Increase {-2.6} {-2.6} Tim (Oct 09)
- Re: Massive SPAM Increase {-2.6} {-2.6} Paul Schmehl (Oct 09)
- Re: Massive SPAM Increase {-2.6} {-2.6} Nathaniel Hall (Oct 09)
- Re: Massive SPAM Increase {-2.6} {-2.6} Tim (Oct 09)
- 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} Vini Engel (Oct 09)
- Re: Massive SPAM Increase Kurt Seifried (Oct 08)
- 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)