Full Disclosure mailing list archives
Re: Spam Solution
From: Steffen Schumacher <ssch () wheel dk>
Date: Sun, 20 Jun 2004 18:40:23 +0200
On 18.06.2004 08:21:45 +0000, Paul Rolland wrote:
Hello,It seems to me that if we make all MTA's register somehow (both SMTP and POST), this would eliminate the hijacked machine as spambot phenomenon. We already have MX records for SMTP, but a lot of providers use different machines to receive (via SMTP) and send mail (POST). So, maybe a new DNS record is introduced for POST. Your machine(s) could do both or not. When your server goes to accept a message, it looks to see if the IP of the sending machine is listed in this new DNS record. If not, return a 5XX error.Hell, this just means that before spamming, people will also have to break DNS ... or am I missing something ?
Screw DNS.. this fixes part of the problem, but what prevents spambots to simply use the configured smtp server for the infected pc? How would you in the server end differntiate between a spambot sending spam and the uninfected user? You would have to look at the content. Now THIS is a scary thought.. How complex wouldn't you have to build your mail-factory? Not doesn't this seem just a bit easier then breaking some dns stuff?
Didn't I read something somewhere about the possibility of this?The whole thread titled "Akamai"... :-(
I don's really see the relevans.. You missed the alternative way - sending spam in the way regular mail-clients do. /Steffen
Regards, Paul _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
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Current thread:
- Spam Solution Alavan (Jun 17)
- Re: Spam Solution Nils Ketelsen (Jun 17)
- Re: Spam Solution Riad S. Wahby (Jun 17)
- Re: Spam Solution Paul Rolland (Jun 17)
- Re: Spam Solution Steffen Schumacher (Jun 20)
- Re: Spam Solution Nick FitzGerald (Jun 18)
- Re: Spam Solution Alavan (Jun 18)
- Re: Spam Solution Gadi Evron (Jun 18)
- Re: Spam Solution Alavan (Jun 18)
- Re: Spam Solution Gadi Evron (Jun 18)
- RE: Spam Solution Larry Seltzer (Jun 18)
- Re: Spam Solution Gadi Evron (Jun 18)
- Re: Spam Solution Valdis . Kletnieks (Jun 18)
- RE: Spam Solution Larry Seltzer (Jun 18)
- Re: Spam Solution Valdis . Kletnieks (Jun 18)
- RE: Spam Solution Larry Seltzer (Jun 18)
- RE: Spam Solution Bojan Zdrnja (Jun 19)