The document is well written and does a good job of describing the various issues related to lists and DKIM. My problem with it is that most of the advice is as far as I can tell unimplemented, so it's more of a Best Hypothetical Practices than a BCP. A typical example is section 4.1 which suggests different message signatures for mail sent to lists rather than mail sent to other places. I'm not aware of anyone doing that, and it's not obvious how you could even tell whether a message is going to a list short of keeping an error prone manually maintained registry of list names. I'd suggest publishing it as Informational or Experimental rather than BCP. Regards, John Levine, johnl@xxxxxxxx, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. http://jl.ly _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf