> Interesting point. Now that you mention it, I can see how the spec > could be read to mean that MDNs are only generated upon request, given > the opening sentence in Section 2. Of course, that fits with all the > keywords currently defined. > > Personally, I've never been stuck on that point. In addition, the > specification is intended to be extensible and any conversations I've > had about vacation notices always revolved around MDNs, so I don't think > that's a requirement one should expect to survive forever. The intent of the specification is definitely that MDNs be generated only upon request. There was talk at the time of later doing a specification for things like vacation messages and change of address notifications, but nothing came of it.
