> AFAIK everything I've talked about is described in an RFC somewhere. Indeed, > the problem isn't that it's not there, it's that there's too much and it's > difficult for inexerienced people to match up the right capabilities and > architecture to solve a given problem. That may well be so. It may be that all that's needed (by me anyway) is a document of some sort that points out where all this stuff is. Having read the SMTP documents pretty closely recently, there is definitely a substantial amount of stuff in there that I don't see implemented in systems that are available to me. However, I am fairly sure that there are in fact gaps in the docs in terms of the features i want to see. Even if I'm wrong, I think it's worth going through the exercise of figuring that out. By which I do not mean "go do some work for me." I'm interested in this and willing to do work, but as I'm sure you've gathered, I do not have a complete picture of what's been documented and what hasn't been.