Re: [anti-spam-wg@localhost] it could be sooo easy - Solution to Spam

[Martin Neitzel <]

\maex>     8.0.30.195.in-addr.arpa IN PTR mail.space.net.
\maex>         IN TXT "MTA=yes;
	    
	    
;

DC> I would like to say that I really like the idea as suggested by Markus.
DC> To show that I really like it I will donate some money(Not so much since
DC> I am very small ISP) if somebody starts working on this idea to make a
DC> RFC or other official document.

Dominique, something more or less close is already in the works.

Here are three approaches using the DNS to document outbound
mail servers for a domain:

Jim Miller / Paul Vixie
	http://ops.ietf.org/lists/namedroppers/namedroppers.2002/msg00658.html
	uses MX RRs with priority 0.

You might want to have a look at these drafts:

Gordon Fecyk "Designated Mailers Protocol"  (DMP):
	http://www.ietf.org/internet-drafts/draft-fecyk-dsprotocol-02.txt
	(Home:  http://www.pan-am.ca/draft-fecyk-dsprotocol-02.txt )
	uses TXT RRs and various atttribute/value combos, much like
	\maex.

Hadmut Danisch "DNS RMX RR"
	http://www.ietf.org/internet-drafts/draft-danisch-dns-rr-smtp-02.txt
	(Home:  http://www.danisch.de/work/security/antispam.html and
	http://www.mikerubel.org/computers/rmx_records/ with an excellent
	description incl. diagrams.)

							Martin Neitzel