Scope, and a preliminary list of issues

  The following is a preliminary list of issues I'd like to work on.
Based on Yakov's comments, the scope of this sub-group should be
recommendations for DNS-based methods to address the spam problem,
focussing on the SMTP envelope EHLO and MAIL FROM.  A narrow focus
should help us achieve consensus more quickly.

  As I see it, the issues surrounding the work are divided into 4 broad
classes,

	I. Design
	II. Implementation
	III. Deployment
	IV. Effectiveness

  I've narrowed down the issues we should address to a sub-set of
those in the documents I referenced yesterday, in order to simplify
the discussion a little.  I believe that we have the following
preliminary sub-issues:

	I.1. Proposed design for addressing issues related to EHLO
	I.2. Proposed design for addressing issues related to MAIL FROM

	II.1. Do (or should) the designs require DNS protocol changes
	II.2. What entities in the network have to implement these proposals
	II.3. Do we have existing implementations of proposals
	      (MTA, MUA, etc)

	III.1. What is the cost of deploying the proposals
	       (time, effort, $$)
	III.2. What is the impact of the proposals on mailing lists
	       i.e. Does the behaviour of sender or receiver change?
	III.3. What is the impact of the proposals on roaming users
	       i.e. Does the behaviour of sender or receiver change?

	IV.1. What part of the spam problem do these proposals address
	IV.2. How can spammers work around these proposals
	IV.3. What is the cost to spammers of working around these
	      proposals
	IV.4. How much of an impact do these proposals have on spam
	IV.5. Does the cost the implementing the proposals justify
	      the effort?

  I will put these issues on a web page, and update them as we go
along, with what we have decided.  That text can then be used as a
basis for an Internet-Draft.

  For now, I would like to have the author of each proposal to post a
1-2 sentence response to each of these issues.  We can then construct
a "meta-proposal", which contains the overlap of the proposals.  We
can address any overlap or duplication by comparing the benefits and
drawbacks of each proposal.

  I expect to do much of the work of collating and editing the
documents, but I also expect that the proposal authors will do much of
the work of writing the base text which is used to flesh out the final
I-D.

  Alan DeKok.