On 2007-04-04 at 11:21 +0100, David Cantrell wrote: > Such software should *never* under *any circumstances* send a challenge > to something to contains a List-Id. If it does contain a List-Id, then > it is either a mailing list that the user signed up to and which > consequently shouldn't be challenged, or it is something pretending to > be a legitimate mailing list (ie, spam) and so there's no point > challenging it as you'll never get a truthful "yes it was me and it's > not spam" response.
Or its a bounce-forward, in which case the sender will hopefully be already whitelisted. Eg, friend bounces on interesting posts occasionally, acting as a S/N filter. -Phil, fighting over-generalisations
