From: jamiel@sybase.com (Jamie Lawrence) Multiply that by a possible 25% (arbitrary) of the list being delayed [...] This afternoon I considered starting the initial delay at one minute and incrementing the delay by one minute each time a message gets delayed. Perhaps the increment would be 15 or 30 seconds--whatever. The point is that the delay would ease in slowly and folks would get a chance to adjust.
Having notification that a message wasn't signed was never presented as one of the purposes of the proposal.
My mistake then, I thought you had proposed marking messages as unsigned as an intermediate step. I had proposed marking them, true, though not as notification, but rather as automated commentary. Notification is a (trivial and useless) effect of the measure, but not its purpose. Eric