nanog mailing list archives

Re: SMTP authentication for broadband providers


From: Mark Foster <mark () foster cc>
Date: Fri, 13 Feb 2004 07:23:20 -0800

On Fri, Feb 13, 2004 at 11:05:16AM +0000, Michael.Dillon () radianz com wrote:

To attack spam, we need to attack it at its core, not at some secondary 
or
tertiary side-effect, with a mechanism that also hurt legitimate users.

We, as network operators don't need to attack spam. We need
to ignore spam itself and get to work securing the network
that enables spammers to do their dirty work.
 
Much talk about using SMTP AUTH, but nothing about using STARTTLS?
Alone, SMTP AUTH is somewhat better, but requires that the passwords be stored
plain-text on the server (CRAM-MD5 or DIGEST-MD5), or that the password 
traverse the wire in plain-text (PLAIN or LOGIN). 

So by requiring STARTTLS for SMTP AUTH the transmission can be encrypted and 
the passwords on the server encrypted as well. 

Furthermore, if mail server admins step up and enable STARTTLS on their systems 
it opens up the possibilities of using certificate verification and PKI.

-- 
Some days it's just not worth chewing through the restraints...
Mark Foster <mark () foster cc>  http://mark.foster.cc/

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