> This is not the only potential use of such a feature. I've spoken > to one MLM developer who told me the feature has been previously > requested for privacy reasons nothing to do with DKIM or ADSP.
That sounds like a somewhat different feature. What we've been talking about so far is basically the old percent hack, embedding one address in another in a way that makes it obvious what the embedded address is. A privacy feature would presumably use an opaque token that only the MLM could relate to the target address. They deal with different problems, and I can see a lot more merit in the blinding than in the percent hack. There's prior art for both which anyone planning to implement something should be aware of, e.g. every mailer in the 1980s and 1990s that had a percent hack or equivalent, and blinded remailers like anon.penet.fi. For the zillionth time, anyone who actually thinks this is worth doing should spend an hour and WRITE IT DOWN as an Experimental I-D. If it's not worth documenting, it's certainly not worth implementing. R's, John _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html
