It's a pity that MAAWG or another group hasn't written a specification for the automatic downloading of configuration (with certificates, to be sure, for some kind of repudiation) and the update thereof, for adoption by the leading consumer e-mail clients.
MAAWG decided it's not in the standards business, but it does BCPs pointing at standards elsewhere (mostly the IETF) that it encourages people to follow. Write a standard that people can use, and I don't think I'd have much trouble getting them to endorse it. It's an interesting design topic, particularly the bootstrap question of how the client decides where to look for its configuration. A lot of this stuff is already available via DHCP, but of course a key goal here is to set config info the last across reboots on different networks. Followup to IETF-something, I suspect. R's, John