Question, Spammers use an openrelay SMTP server to post thru. Let's call that machine A. They make their headers appear to be from elsewhere. Let's say that is machine B (it might be real or not). When the mail arrives at machine C (it's desination), that mail server can see evidence of B (clearly), but also information pertaining to A? Or is it that only information from some uplink A connects to is evident?
If C sends a digest (subject of a new RFC) to B of the message through SMTP saying "did you send this?", then there are two possibilities - (1) The answer is "no I did not", or (2) no such mail server. Does A have record of the email? If it does, can it determine that it was from the real email user? Does this cover all the bases? Hmmm, I have half a feeling that this has been explained to me already..... Regards, - Paul >My favourite quote was "I'd love to turn off China" >But the point I get from this is that its the same old open-relay problem it >ever was, with the twist of faked headers, to stop them being traced. >And the solution is to educate email sysadmins. >d. > > > >>-----Original Message----- >>From: Paul Hammant [mailto:[EMAIL PROTECTED]] >>Sent: 21 March 2002 19:04 >>To: [EMAIL PROTECTED] >>Subject: SPAM #3 >> >> >>/. -> http://slashdot.org/articles/02/03/21/1733224.shtml?tid=111 >> >>dosten <mailto:[EMAIL PROTECTED]> sent us a link to a story running on >>Cnet about the spam epidemic >><http://news.com.com/2009-1023-864815.html>. My favorite stat is that by >>2006, we'll be getting 1400 spam a /day/. Of course, I get that every >>/week/. Talks about foreign spam relays, block lists, and so on. Decent >>piece explaining a huge problem that's only getting worse. >> >>Addendum - 2002 JAMES coders formulate plan for phasing out of >>unaccountable mail servers and upgrade JAMES itself to be compliant with >>their new RFC. >> >>-PH >> >> >>-- >>To unsubscribe, e-mail: >><mailto:[EMAIL PROTECTED]> >>For additional commands, e-mail: >><mailto:[EMAIL PROTECTED]> >> > > >-- >To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> > > > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
