It appears that John C Klensin <john-ietf@xxxxxxx> said: >Should we decide to say more about TURN (other than completely >prohibiting it), we should also review whether, we should require its >announcement in EHLO in parallel with EXPN (see rfc5321bis Section >3.5.2). Like Victor, I don't know any MTA in common use that implements TURN. I can imagine situations on private networks where it might be useful. Despite what some other people (not you) keep asserting, we do not know all of the nooks and crannies where devices might be using features like TURN in ways that make sense. So my inclination would be to change nothing, or at most a short note that it's risky unless you have an external way to be sure what host you're talking to. I definitely do NOT want to offer advice about what that external way might be. R's, John -- last-call mailing list -- last-call@xxxxxxxx To unsubscribe send an email to last-call-leave@xxxxxxxx
