On Sun, 15 Jun 2003, Scott Harney wrote:

> On Saturday 14 June 2003 05:05 pm, Dustin Puryear wrote:
> > I don't see what is so hard about relaying your mail through Cox.
> 
> My only problem with it is that it's lazy and ultimately a non-solution.  
> What 
> I would be interested to see, as a customer, is statistics showing over time 
> the reduction of spam emanating from Cox's cable modem customer base before 
> and after initiating the block.  Prove it works.

I agree it is not "the" solution, but it is a solution.  There are
technically better ways to deal with spam, the main problem being the SMTP
protocol is inheritently incapable of dealing with spam.  Something i read
recently that looks promising is Reverse MX
(http://www.ietf.org/internet-drafts/draft-danisch-dns-rr-smtp-01.txt).
Basically, the receiving MTA does a DNS looking to see if the sending ip
is listed in the reverse mx record of the domain you say the mail is from.  
If not, the mail is rejected.

Seems to be a simple, pretty effective solution.  It will stop a lot of 
mail forgeries.  And it will make spammers start using their own servers 
to send mail, which makes the cost of spamming skyrocket.  Which is fine 
by me.

ray
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Ray DeJean                                       http://www.r-a-y.org
Systems Engineer                    Southeastern Louisiana University
IBM Certified Specialist              AIX Administration, AIX Support
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