On Thu, 29 Mar 2007, John Rudd wrote: > You can't control how many other people are doing the same probe > at the same time. It might seem like batching from a corpus makes > it better than doing live probes, but the fact is that you don't > know, and can't know. All you can control is "am I going to probe > for TMDA/SAV or not". > > In a private message, John Hardin suggested that putting TDMA and > SAV into the same lump isn't fair. I wont duplicate his email > here (since that would be rude),
I now kinda regret doing that because I didn't want to take this too far off-topic, but it does seem to be of interest. John, if you want to reply to the list that's fine by me. John's point is valid; you can't exclude the behavior of others when calculating the impact of behavior you control. > If you want to deal with eliminating forgeries, require DK/DKIM. > Any resources that impacts upon the forged sender (obtaining their > public key) is at least consensual on their part (because they > have offered their public key). The context of my question is not necessarily preventing forgeries, and is not necessarily anti-spam. I'll restate my question with some of the unspoken assumptions made clear: Is there a non-abusive way to automatically verify an email address is valid? Verification does not need to occur in real-time; large delay is acceptable. It is not intended as any sort of attack/abuse/spam prevention or mitigation strategy. A given address will not be checked more than once. There may not be any email message headers associated with the address. If this is drifting off topic, let's kill it and I'll find someplace more appropriate. -- John Hardin KA7OHZ http://www.impsec.org/~jhardin/ [EMAIL PROTECTED] FALaholic #11174 pgpk -a [EMAIL PROTECTED] key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79 ----------------------------------------------------------------------- So Microsoft's invented the ASCII equivalent to ugly ink spots that appear on your letter when your pen is malfunctioning. -- Greg Andrews, about Microsoft's way to encode apostrophes ----------------------------------------------------------------------- 14 days until Thomas Jefferson's 264th Birthday
