On Thu, May 08, 2008 at 03:11:59PM +0200, Robert Müller wrote: > > BTW: Also for me 'null senders' are not common - never had problems with > this, except UBE.
Have you even looked at your traffic archives, if you keep one? How do you know there isn't any problems if someone doesn't realize to report it? I have concrete evidence. > Correctly configured servers/clients should not produce such mails, IMHO. That's just absurd. I could just as well say: "Correctly configured servers don't create backscatter.". Yet we have the problem. In case of VBounce, chances of FPs are even less acceptable. You are supposed to reject or discard backscatter, I see no point in just tagging it. So discarding is bad, but rejecting most likely means that sending party doesn't get any notification of failure either. Currently VBounce is only useful as "add little score and hope URIBL and other checks match the returned body". Hopefully someone has time to fix the too generic rules. We should only match sure bounces.