On Thursday 24 July 2008 12:37, Sven Schwyn wrote: > Hi > > I've just released the first version of Postwhite, a policy server for > Postfix which implements whitelisting. These per-recipient whitelists > are entirely managed by use of emails. > > http://www.bitcetera.com/products/postwhite > > Here's a real-life example of what Postwhite does: > > Arthur‘s main email address [EMAIL PROTECTED] is great for everyday use, > but he doesn‘t want to pollute it by using it for mailing lists, > websites, online shopping and such. Postwhite to the rescue! Arthur > creates a virtual email address [EMAIL PROTECTED] which is delivered > to the same mailbox. > > Initially, all incoming emails will be rejected, so when Arthur > decides to join the Betelgeuse mailing list (digest), his whitelist > has to learn about this. Arthur sends an empty email to > [EMAIL PROTECTED] which puts Postwhite into learning mode for a > limited period of > time. In learning mode, Postwhite allows and delivers any incoming > mails, yet it delivers a followup notification message along with it. > When the first email from the Betelgeuse mailing list comes in, Arthur > simply replies to the corresponding notification message thus adding > Betelgeuse to the whitelist. > You appear to have missed the next step where spammers scrape Arthur's list mail address from the mailing list archives and use it as the Mail From address in spam they send to him.
Scott K
